scholarly journals Variability in pomological traits of dog rose (Rosa canina L.) under the ecological conditions of the Republic of Croatia

2021 ◽  
Vol 26 (51) ◽  
pp. 41-47
Author(s):  
Nikola Tomljenović ◽  
Tomislav Jemrić ◽  
Marko Vuković

Wild or dog rose (Rosa canina L.) is a successful colonizer of various habitats and different soil types and is widely distributed across the Republic of Croatia. In this research, in order to estimate pomological variability in native dog rose populations, four genotypes from four locations in different geographic areas of Croatia were selected and sampled. The genotypes selected were: genotype G1, originating from the continental part of Croatia (Pitomača); genotypes G2 and G3, originating from the Mediterranean part of Croatia (Kukurini and Posedarje, respectively); and genotype G4, originating from the upland part of Croatia (Gračac). Fruits were harvested at optimum harvest dates in 2010 and 2012. Genotype had a significant effect on each studied pomological trait (length, width, geometric mean diameter, sphericity, volume, surface, shape index, weight, flesh weight, flesh ratio and total dry matter content), while year significantly affected all parameters except sphericity and shape index. The highest values for most pomological traits in 2010 and 2012 were found in the G4 and G3 genotypes, respectively. This research highlighted the existence of high variability in pomological traits among dog rose populations in Croatia, which emphasizes the possibility of further breeding and cultivation.

2021 ◽  
Vol 17 (2) ◽  
pp. 84-92
Author(s):  
A. A. Makarov ◽  
N. I. Mamsirov

In order to realize the maximum potential parameters of winter wheat productivity, it is necessary, first of all, to use high-yielding varieties with optimal quality indicators of grain, as well as progressive agricultural technologies aimed at obtaining a stable crop yield. Winter wheat places high demands on its previous crops. Insufficient amount of productive moisture in the soil or its extremely low reserves affects the yield, and consequently, the quality of winter wheat grain according to unpaired predecessors. Moreover, dry autumn during the sowing period leads to its delay, which is the reason for obtaining uneven and weak seedlings. In this regard, studies have been carried out to study and assess the influence of predecessors on the agrocenosis, yield and grain quality of promising varieties of Adel, Grom, Tanya winter wheat. According to the experimental scheme, peas, corn for silage and sunflower have been identified as the preceding crops for winter wheat. Agrotechnology in experience is generally accepted for the foothill zone of the Republic of Adygea. The results of the research made it possible to identify the most optimal of the considered predecessors in the cultivation of winter wheat, capable of providing stable yields with high quality grain. Certain differences in the photosynthetic activity of the studied winter wheat varieties for different predecessors have been noted. It has been found that the leaf area of winter wheat varieties is in the range of 30,0–33,5 thousand m2/ha. The highest dry matter content in the range of 4,9–5,0 t/ha is observed in the Grom variety, and the predecessor is peas. The largest number of grains in an ear for three previous crops is 40–43 pcs / ear for peas. It also had a fairly significant effect on the weight of 1000 grains and the grain yield of winter wheat. For example, the weight of 1000 grains of the most productive Thunder variety varied from 40,1 to 41,6 gm, depending on the previous crop. According to the results of the experiments, the highest grain yield of winter wheat within the range of 5,3 t/ha has been noted for the Grom variety when cultivated for peas. The smallest grain yield in the range of 3,8–3,9 t/ha is typical for all studied varieties of winter wheat, namely, according to the cultivated predecessor – sunflower.


Author(s):  
J. Racskó ◽  
J. Nagy ◽  
Z. Soltész ◽  
M. Soltész ◽  
P. T. Nagy ◽  
...  

The aim of the present study was to determine the effect of nitrogen supply on yield and fruit quality of apple cultivars and to explore the relationships between canopy density and the different fruit quality parameters. The experiments were carried out at Kálmánháza, in Eastern Hungary in a private orchard in 2003-2004. The response of four apple cultivars ('Elstar', 'Gala Prince', 'Granny Smith', 'Idared') to different nitrogen dosages was studied. The assessed and calculated indices were: yield, fruit diameter, fruit height, shape index, fruit mass, firmness, dry matter content and colouration. The results indicated that nitrogen fertilization has a significant effect on the yield and fruit quality of apple cultivars. The calculated specific yield values were reduced by the application of nitrogen via the increase in the volume of the canopy. An opposit trend was observed for fruit diameter, fruit height and fruit weight, which increased with increasing nitrogen supply. The reduced shape index caused flattening of fruits. However, the improvement of fruit quality via increasing nitrogen dosage is only virtual, since these dosages increase the fruit size, but firmness, dry matter content and colouration are diminished, which decreases the value of the fruits on the market. The authors also studied the relationships between canopy density responsible for assimilation and light supply of the fruits and the different fruit quality parameters. The closest linear inversely proportional relationship was found in the case of colouration. There was a negative linear relationship between canopy density and firmness or dry matter content. The relationship between canopy density and fruit mass could be described by a quadratic polinomial function.


Author(s):  
М.М. САДЫКОВ ◽  
М.П. АЛИХАНОВ ◽  
А.Г. СИМОНОВ ◽  
Г.А. СИМОНОВ

Изложены материалы исследований по изучению влияния сезона рождения телят на их рост, развитие и качество мяса в предгорной зоне Республики Дагестан. Установлено, что интенсивное выращивание и откорм бычков калмыцкого скота по технологии мясного скотоводства «корова—теленок» позволяет получать животных с высокой живой массой. Бычки зимнего периода рождения достигают живой массы 454,4 кг, весеннего — 425,8 кг, разница в пользу молодняка зимнего периода рождения 28,6 кг (6,7%), по среднесуточному приросту, соответственно, 795 г и 744 г, или на 51 г (6,8%) в пользу первых. Бычки зимнего сезона рождения превосходили сверстников весеннего сезона по предубойной живой массе на 27,1 кг (6,6%). Более высокая энергия роста бычков зимнего периода рождения способствовала повышению убойных качеств. Они превосходили по массе туши на 20,5 кг, или на 9,2%, убойному выходу — на 1,3% молодняк весеннего периода рождения. По химическим показателям мяса они также имели преимущество в сравнении с аналогами весеннего сезона рождения — по содержанию сухого вещества на 0,53%, жира — на 0,44%. По содержанию белка в мясе бычков зимнего и весеннего периодов рождения существенных различий не установлено. Для повышения производства высококачественной говядины в предгорной провинции Дагестана следует получать телят зимнего периода рождения для выращивания и откорма, что позволит сократить материальные затраты на производство животноводческой продукции и таким образом повысить рентабельность производства говядины. The article presents research materials on the influence of the calves ' birth season on their growth, development and quality of meat in the foothill province of Dagestan. It is established that intensive cultivation and fattening of calves of Kalmyk cattle by the technology of beef cattle breeding "cow-calf" in the conditions of the foothill province of the Republic of Dagestan allows you to get animals with a high live weight. Bulls of the winter period of birth reach a live weight of 454,4 kg, spring-425,8 kg, the difference in favor of bulls of the winter period of birth was 28,6 kg (6.7%), the average daily increase, respectively, 795 g and 744 g, in favor of the former by 51 g (6,8%). Bulls of the winter birth season outnumbered their counterparts of the spring season in pre-slaughter live weight by 27,1 kg (6,6%). Higher growth energy of winter period calves contributed to an increase in slaughter qualities. They surpassed the carcass weight by 20,5 kg or 9,2%, and the slaughter yield by 1,3% of their peers. Chemical indicators of meat also had an advantage in comparison with analogues of the spring birth season in terms of dry matter content by 0,53%, fat by 0,44%. There are no significant differences in the protein content in the meat of winter and spring-born calves. To increase the production of high-quality beef in the foothill province of Dagestan, it is necessary to receive calves of the winter birth period for growing and fattening, which will reduce material costs for the production of livestock products and thus increase the profitability of beef production.


2011 ◽  
Vol 75 (1) ◽  
pp. 21-30
Author(s):  
Dorota Olszewska ◽  
Iwona Jędrzejczyk ◽  
Paweł Nowaczyk

Biometrical Assessment of Interspecific Hybrids ofCapsicumGenusThe F1hybrids obtained as the result of interspecific crosses:C. annuumxC. frutescens, C. frutescensxC. annuum, C. frutescensxC. chinenseandC. chinensexC. frutescenswere analysed biometrically. The plants were cultured in unheated foil tent. Yield and the number of fruit from plant were qualified. For ten plants of each of the hybrids detailed fruit analysis were performed. The tested traits were: weight of fruit, length, width, technological weight and weight of pericarp, pericarp thickness, the weight of placenta without seeds, the weight of dry seeds and the dry matter content. The analysis of variance was conducted on the obtained results. The tested hybrids were characterised by the large differentiation of the estimated characters. The hybrids obtained from crosses:C. annuumxC. frutescensandC. frutescensxC. annuumseem to be the most valuable material for the future pepper breeding work. Fruits of these hybrids combine high weight, typical for cultivated forms ofC. annuumwith increased dry matter content characteristic forC. frutescens. These materials will be used as the parental forms of homozygous lines which possess traits valuable in genetic improvement of pepper.


2018 ◽  
Vol 13 (3) ◽  
pp. 5-9
Author(s):  
Ирек Бикчантаев ◽  
Irek Bikchantaev ◽  
Шамиль Шакиров ◽  
Shamil' Shakirov ◽  
Марсель Тагиров ◽  
...  

For the production of high quality silage, and reduction of losses of biological yield, the use of effective biological preparations is topical. In order to reveal the effectiveness of the preservation of nutrients from plant raw materials, a number of laboratory studies were carried out in 2016-2017 in the Tatar Scientific Research Institute of Agriculture (TatNIISKh). The object of research was haylage harvested from the green mass of alfalfa, grown on the experimental field “TatNIISh” in Laishevsky district of the Republic of Tatarstan. The nutritional value of the conserved green mass of the alfalfa (Medicago sativa) variety Aisleau in the phase of budding with different moisture was analyzed. Preservation of the planted plant mass was carried out using biological preparations Biotrof (St. Petersburg), Ferbak-Sil (Kazan), Bioamid-3 (Saratov). The variant with biological preparation Biotroph served as the control. The maximum content of exchange energy (EE), with an increased concentration of phytomass moisture, was established in the control sample, which was 2.36 MJ/kg and was higher than the experimental samples with Bioamid-3 and Ferbak-Sil preparations at 6.78 and 3.82 %. With an increased dry matter content in the green mass of alfalfa, this indicator was the maximum in the sample with the preparation Bioamid-3 (3.67 MJ/kg), which was higher than the control by 4.56%. The leader in the concentration of crude protein and crude fiber, with a high moisture content of raw materials, was set in a control sample and amounted to 6.11 and 6.07%, which were higher than the prototypes with Bioamid-3 and Ferbak-Sil preservatives by 0.33 and 0.16%, 0.76 and 0.48% respectively. The leading preservative for the preservation of raw protein and crude fiber, with reduced moisture content of raw materials, showed the drug Bioamid-3, whose indices were above the control by 0.39 and 0.23%.


Genes ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 419
Author(s):  
Karolina Kaźmińska ◽  
Ewelina Hallmann ◽  
Aleksandra Korzeniewska ◽  
Katarzyna Niemirowicz-Szczytt ◽  
Grzegorz Bartoszewski

Cucurbita maxima Duchesne squash and pumpkins are cultivated world-wide. Cucurbita maxima fruits are produced for fresh market and are valuable for food processing. Therefore, fruit characteristics and yield are the traits of high economic importance for breeders. To date, the genetic basis of fruit-associated traits in C. maxima have been poorly understood. In the present study, we evaluated fruit-associated traits and conducted quantitative trait locus (QTL) analysis using recombinant inbred lines (RILs) derived from a cross of two inbred lines with different fruit morphotypes. Phenotypic data for nine fruit traits (earliness, weight, number per plant, yield per plant, length and diameter, shape index, flesh thickness, sucrose content and dry matter content) were collected for RILs in two open-field experiments. Pairwise analysis of the phenotypic data revealed correlations among the fruit and yield-associated traits. Using a previously developed genetic map, we identified 26 QTLs for eight traits. The QTLs were found in 10 locations on eight chromosomes of C. maxima. The QTLs were detected across experiments and explained up to 41.4% of the observed phenotypic variations. Major-effect QTLs for multiple fruit-associated traits were clustered on chromosome 4, suggesting that this genomic region has been under selection during diversification and/or domestication of C. maxima.


2021 ◽  
Vol 215 (12) ◽  
pp. 2-8
Author(s):  
N. Velizhanov

Abstract. The aim of the work is to separate from hybrid generations (F3-F4) the promising material of high-temperature stress resistance. Scientific novelty. Testing the growth of the germ root at 35, 38 and especially 43 °C is an effective method of differentiating tomato genotypes and identifying their resistance to heat. As a result of our studies of inter-grade and remote hybridization, tomato lines have been obtained, combining heat-resistantness with high productivity and valuable biochemical indicators of fruit quality. Methods. The material for research served 11 promising varieties and lines of tomato. Dedicated genetic sources of heat resistance were included in inter-grade crossings. The selection of genotypes for heat-resistantness in the field was carried out taking into account the complex of morphological and agrochemical features (type and strength of plant growth, bush foliage, phenology, shape and size of the fruit, general productivity of commodity fruits, the mass of the fetus). Results. It has been established that in varieties and lines of tomato, created as a result of inter-grade and interspecies interbreeding, heat-resistant sporophyte varied to large limits depending on the genotype and temperature level. The fruit's product ranged depending on the genotype and the year of cultivation (71.8–98.3 %). All forms turned out to be large-fruited – the weight of the fruit was from 87.8–124.6 g. L132, L204, L112 lines stood out as early forms. The dry matter content of all the genotypes studied is high, as it is above 5.0 %, except for the lines L122, L211 dry matter content of which was 4.74 and 4.58 %, respectively. Vitamin C was highest in L143 (63.32), L141 (62.65), L112 (63.38).


2018 ◽  
pp. 54-56
Author(s):  
M. G. Ibragimbekov ◽  
O. R. Davletbaeva ◽  
А. N. Khovrin

In terms of occupied areas, onion is on the third place in the world among vegetable crops, second only to tomato and watermelon. In Russia, onion is grown on an area of 88 to 96 thousand hectares of onions, and ranks third, yielding to cabbage and tomato.The increase in the production of onions is not only due to the increase in the areas occupied by the crop, but also due to increased yields. This is achieved by introducing new highly productive varieties and hybrids into production, increasing the overall cropping culture and the level of cultivation technology. Along with the creation of heterotic hybrids at the present time, the Russian Federation also continues to select varieties that show high rates when grown in a oneyear crop. The results of production tests of a new onion variety of Forward Selected Breeding VNIIO a branch of the FGBNU FNCO has shown that it is promising because it has a high yield potential, high quality of bulbs and excellent preservation in conditions of repositories with controlled conditions. Characterized by mid-maturity maturation. The period from full shoots to mass lodging of leaves is 110 days. In relation to the longitude of the day, the forward sort refers to a group of long-day bows. The bulb is bilobate, rounded and rounded – flat, with an average mass of 90-120 g. The color of the dry covering scales is yellow-brown, the succulent scales are greenish. The taste is semi-sharp. The dry matter content in the bulb during the test years was 11.0-12.0%.


Author(s):  
V.K. Serderov ◽  
T.G. Khanbabaev ◽  
D.V. Serderovа

Наряду с правильной организацией базой хранения, для эффективного использования картофеля большое значение имеет его переработка. Содержание сухого вещества один из показателей качества пригодности сортов картофеля для его переработки. В статье обобщены результаты оценки урожайности сортов картофеля в климатических условиях высокогорья Республики Дагестан и содержания в клубнях сухого вещества как критерия пригодности сортов для переработки на картофелепродукты. Исследования проводили в опорном пункте Курахский , МО Курахский район Республики Дагестан, расположенном на высоте 2000 2200 м над уровнем моря в 2017 и 2018 годах. Контроль районированный в республике среднеранний сорт Волжанин. Схема посадки 70 30 см, повторность четырехкратная. Почвенный покров представлен горными каштановыми среднесуглинистыми почвами. Содержание гумуса 2,91-3,01. Питательными веществами почвы обеспечены в средней степени: гидролизуемого азота 2,2-3,5 мг, подвижного фосфора 4-6 мг и обменного калия 12,5-16,5 мг на 100 г. Погодные условия вегетационных периодов были благоприятные для возделывания картофеля. Средняя температура воздуха во время посадки (май) составила 11-12 С, а во время вегетации летние месяцы 14-16 С. Опытные участки расположены опыты в засушливой зоне, так как выпадающие осадки во время вегетации (в среднем 60-80 мм в месяц) недостаточны для роста и развития картофеля. За время вегетации были проведены пять поливов по бороздам из расчета 50 л на м2 (500 м3/га). По урожайности (31,438,7 т/га) в сравнении с контролем выделились сорта: Импала, Ирбитский, Жуковский ранний, Манифест, Матушка, Невский, Примобелла, Розара, Сильвана, Спиридон и Удача. По содержанию сухого вещества (25,829,1) в сравнении с контролем выделились сорта: Алена, Нарт, Гиоконда, Матушка, Росси, Вектор, Примобелла, Импало и Дезире.Along with the correct organization of storage base, for the effective use of potatoes, its processing is of great importance. The dry matter content is one of the indicators of the quality of potato cultivars suitability for processing. The article summarizes the results of assessment of the yield of potato cultivars in the climatic conditions of the highlands of the Republic of Dagestan and the content of dry matter in tubers as a criterion for the suitability of cultivars for processing into potato products. The research was carried out in the reference point Kurakhsky, MO Kurakhsky district of the Republic of Dagestan, located at an altitude of 2000-2200 m above sea level in 2017 and 2018. Control-zoned in the Republic of mid-early cultivar Volzhanin. Planting scheme is 70 30 cm, repeat-four times. The soil is mountain brown medium loamy. Humus content is 2.91-3.01. Soil nutrients are provided to an average extent: hydrolyzed nitrogen 2.2-3.5 mg, mobile phosphorus 4-6 mg and exchange potassium 12.5-16.5 mg per 100 g. The weather conditions of the growing season were favourable for potato growing. The average air temperature during planting (May) was 11-12 C, and during the growing season the summer months was 14-16 C. Experimental plots are located in the arid zone, as precipitation during the growing season (on average 60-80 mm per month) is not sufficient for the growth and development of potatoes. During the growing season, five furrow irrigation was carried out at the rate of 50 l per m2 (500 m3/ha). In terms of yield (31.438.7 t/ha) in comparison with the control, the following cultivars were distinguished: Impala, Irbitsky, Zhukovsky ranniy, Manifest, Matushka, Nevsky, Primobella, Rosara, Silvana, Spiridon and Udacha. According to the dry matter content (25.829.1) in comparison with the control, the following cultivars were distinguished: Alena, Nart, Gioconda, Matushka, Rossi, Vector, Primobella, Impala and Desire.


World Science ◽  
2019 ◽  
Vol 1 (12(52)) ◽  
pp. 4-11
Author(s):  
М. М. Джахангиров

The object of the study has been a fresh leaf of green tea grown in the Lenkoran-Astara zone of the Republic of Azerbaijan, dried green and black tea and liquid and dry extract based on them. In order to study the effect of technological parameters on extractiveness, the following factors have been selected: temperature, extraction time, hydraulic module (ratio of raw material to extractant). The density of the obtained extract has been determined by the pycnometer method, the viscosity by viscometers of various diameters, and the dry matter content by the refractometric method. The results of experimental studies show that the optimum conditions for the transition of the maximum amount of extractive substances to a solvent during the extraction of black and green tea with water are 363.15 K, the extraction time is 180-200 min, and the ratio of raw material to extractant (hydraulic module) is 1:20.


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