Restricted branching narrow-leafed lupin. 2. Cross-pollination

2000 ◽  
Vol 51 (8) ◽  
pp. 1011 ◽  
Author(s):  
Miles Dracup ◽  
Bob Thomson
Keyword(s):  
Lupinus Angustifolius ◽  
The Other ◽  
Mother Plant ◽  
Cross Pollination ◽  
Flower Colours ◽  
Mother Plants ◽  
Flower Position ◽  
Field Plots ◽  
Possible Cause

The restricted branching character appears to be unstable in some genotypes of narrow-leafed lupin (Lupinus angustifolius L.). This study investigated random cross-pollination as a possible cause. Restricted and normal branching genotypes with different flower colours were grown in field plots, the progeny seed was sown, and the frequencies of off-flower colours, indicating cross-pollination, were recorded. Six pairs of genotypes were studied and there was no detectable cross-pollination in 3 pairs, <0.1% in 1 pair, and about 2% in the other 2 pairs. Cross-pollination appears to be related to genotype and there was no relationship with position of the mother plant in the plot, flower position on the mother plant, or architecture (branching habit). Most cross-pollination was on blue-flowering mother plants.

Aptitudes germinatives comparées de graines de Rumex acetosella issues de populations correspondant à des stades distincts d'une succession postculturale

1988 ◽  
Vol 66 (7) ◽  
pp. 1381-1390 ◽  
Author(s):  
J. Escarré ◽  
C. Houssard
Keyword(s):  
Seed Weight ◽  
Plant Biomass ◽  
Germination Rate ◽  
The Other ◽  
Mother Plant ◽  
Old Fields ◽  
Rumex Acetosella ◽  
Significant Difference ◽  
Flowering Rate ◽  
Mother Plants

Germination of Rumex acetosella L. was studied under a variety of experimental conditions to determine whether populations from old fields of different ages (fallow for 6 months to 15 years) differed in seed weight and germination rate and in plant biomass and flowering rate of the resulting plants. Fresh seeds collected from these natural populations showed differences in germination that varied with the date of harvest and the number of years since the field was last cultivated: seeds of the youngest population harvested in July germinated the best and were lighter than those of the other populations. Different fertilizer levels applied during the growth of the mother plants from seeds collected in the original old fields affected the mean weight and the germination rate of the resulting seeds, regardless of the density of cultivation of the mother plant. However, the effect of different fertilizer levels on mean seed weight varied with the origin of each population. Heavy seeds (mean weight > 0.6 mg) of mother plants from the populations of fields abandoned over 2 years ago germinated better than light seeds (mean weight < 0.6 mg). There was no significant difference between heavy and light seeds in terms of percent germination for seeds from mother plants that came from the "youngest" field. These differences in germination rate observed in field-collected seeds were also found in light seeds of the offspring generation: light seeds of the mother plant from the population belonging to the more recently abandoned old field germinated the best. Plants grown from heavy seeds that came from the other populations of older fields had more biomass than those resulting from light seeds. This difference has not been observed between individuals resulting from light and heavy seeds of the youngest population. On the other hand, these individuals had a higher flowering rate than those resulting from the older populations. These results are interpreted in relation to the successional status of the populations: high flowering and early germination rates are suitable characteristics for establishment of plants on bare ground or after a disturbance, whereas heavy seeds with more reserves ensure germination and enough biomass of the resulting plants in density-dependent conditions.

Yield improvement in high lysine barley

1981 ◽  
Vol 32 (3) ◽  
pp. 425 ◽  
Author(s):  
RN Oram ◽  
H Doll
Keyword(s):  
Crude Protein ◽  
Seed Protein ◽  
Unit Area ◽  
Energy Content ◽  
The Other ◽  
Seed Composition ◽  
High Lysine ◽  
Seed Yield Components ◽  
Field Plots ◽  
Barley Genotypes

Twenty-three barley genotypes were grown in field plots and the seed-yield components and seed composition were investigated. Ten malting and feed cultivars and waxy endosperm selection lines had the standard concentration of lysine in their seed protein. The other genotypes were five different natural or induced high-lysine mutants and/or selection lines developed from them. High-lysine lines were lower yielding than the most productive normal lysine cultivars because of a decrease in weight per seed, accompanied by a reduced content of the carbohydrates extractable with dimethyl sulfoxide. Ris� mutant no. 7 was exceptional in having fewer seeds per unit area and a normal carbohydrate content. Within the group of lys 3 homozygotes derived from Ris� no. 1508, the higher yielding lines had more seeds per unit area, higher concentrations of extractable carbohydrates, and lower concentrations of crude protein. Similar trends with yield also occurred among the lines homozygous for the lys gene from Hiproly. The yields of the most productive lys and lys 3 homozygotes approached that of Clipper, the leading Australian malting cultivar, but were 25% lower than that of the most productive feed barley, Cutter. The other mutants, Ris� no. 7, Ris� no. 29 and Clipper 500, were lower yielding than the better lys and lys 3 selections. The possibilities for improving the yield and energy content of the latter two high-lysine types by selection are discussed.

Evaluation of low temperature hardiness of strawberry plants under field and controlled conditions

1993 ◽  
Vol 73 (4) ◽  
pp. 1123-1125 ◽  
Author(s):  
J. M. Turner ◽  
K. K. Tanino ◽  
C. Stushnoff
Keyword(s):  
Low Temperature ◽  
Key Words ◽  
Scoring System ◽  
Growth Habit ◽  
Field Conditions ◽  
Mother Plant ◽  
Fragaria Ananassa ◽  
Plant Survival ◽  
Field Growth ◽  
Mother Plants

When acclimated strawberry plants (Fragaria × ananassa Duch. ’Redcoat’) from the field were placed in a programmable freezer, mother strawberry crowns were as hardy or hardier than daughter crowns when frozen to −11 °C. However, under field conditions, daughter plants expressed consistently greater hardiness than mother plants. Mulching had no effect on daughter plant survival, whereas enhanced mother plant survival was observed. Field-growth habit of mother crowns may be the important factor for consistent winter survival under prairie conditions. A simple scoring system was developed to predict survival of strawberry plants. Key words. Fragaria × ananassa Duch., strawberry, crowns, low temperature hardiness

Agriculture in an Area Impacted by Past Uranium Mining Activities

2007 ◽  
Author(s):  
F. P. Carvalho ◽  
J. M. Oliveira ◽  
O. Neves ◽  
M. M. Abreu ◽  
E. M. Vicente
Keyword(s):  
Irrigation Water ◽  
Mine Drainage ◽  
The Other ◽  
Shallow Aquifer ◽  
Uranium Mine ◽  
Mining Activities ◽  
Growth Season ◽  
Field Plots ◽  
Edible Parts ◽  
Topsoil Layer

The shallow aquifer near the old Cunha Baixa uranium mine (Viseu, Portugal) was contaminated by acid mine drainage. Concentration of radionuclides in water from irrigation wells and in the topsoil layer of the agriculture fields nearby display enhanced concentrations of uranium, radium and polonium. Two types of agriculture land in this area were selected, one with enhanced and another with low uranium concentrations, for controlled growth of lettuce and potatoes. Plants were grown in replicate portions of land (two plots) in each soil type and were periodically irrigated with water from wells. In each soil, one plot was irrigated with water containing low concentration of dissolved uranium and the other plot with water containing enhanced concentration of dissolved uranium. At the end of the growth season, plants were harvested and analysed, along with soil and irrigation water samples. Results show the accumulation of radionuclides in edible parts of plants, specially in the field plots with higher radionuclide concentrations in soil. Radionuclides in irrigation water contributed less to the radioactivity accumulated in plants than radionuclides from soils.

Phenological development studies with Lupinus angustifolius and L. albus in Victoria

1977 ◽  
Vol 17 (87) ◽  
pp. 637 ◽  
Author(s):  
TG Reeves ◽  
KA Boundy ◽  
HD Brooke
Keyword(s):  
Global Radiation ◽  
Field Measurements ◽  
Lupinus Angustifolius ◽  
Floral Initiation ◽  
Flowering Period ◽  
Large Area ◽  
North Eastern ◽  
Highly Correlated ◽  
Developmental Phases ◽  
Field Plots

The effect of serial planting on the phenological development of Lupinus angustifolius (cvv. Uniwhite, Uniharvest and Unicrop) and L. albus (cv. Ultra) was investigated in field plots at north-eastern Victoria. In 1973, Uniwhite was sown at 16 weekly intervals from May to September at one site: in 1974 Uniharvest, Unicrop and Ultra were planted at four locations, from early April to late September. Duration of the developmental phases-emergence to floral initiation, initiation to first flower, and first flower to last flower-was related to field measurements of temperature, photoperiod, and global radiation. Development of all cultivars from emergence to flowering was highly correlated with temperature and photoperiod (coefficients of determination from 49.5 per cent to 98.5 per cent). Our results suggested that photoperiod contributed to the duration of the flowering period. Unicrop and Ultra were quicker to initiate and flower than Uniharvest and Uniwhite, particularly from early plantings. Later planting reduced the duration of the post-initiation phases, particularly duration of flowering. The range of developmental adaptability exhibited by the four cultivars indicates that lupins could be grown over a large area of Victoria.

scholarly journals Results in the determination of some Hosta varieties by the method of isoelectric focusing

2001 ◽  
Vol 7 (1) ◽  
Author(s):  
A. Mándy ◽  
É. Stefanovits-Bányai ◽  
Cs. Imre ◽  
Zs. Szafián
Keyword(s):  
Isoelectric Focusing ◽  
Early Stage ◽  
Mother Plant ◽  
Isoenzyme Pattern ◽  
Easy Method ◽  
Mother Plants ◽  
Peroxidase Enzymes ◽  
Hybrid Lines ◽  
Isoenzyme Patterns

Mass propagation of 5 newly introduced Hosta varieties was carried out by the method of micropropagation. Our aim was to determine exact variety specificity after the micropropagation period in the pattern of peroxidase isoenzymes by isoelectric focusing in pH 3-9 range and to determine that phenological phase of mother plant in which the isoenzyme pattern of mother plant can safely be comparable to the isoenzyme pattern of micropropagated descendants. The isoenzyme patterns of descendants were similar to the mother plants of the same hybrid lines. The older leaves seemed to be not so suitable for examination than newly developed ones despite of the higher activity of peroxidase enzymes. There were big differences in isoenzyme patterns of leaves in different phenological phases. With this quick and easy method Hosta varieties could be selected already in the very early stage of micropropagation.  

scholarly journals POLLEN ATAU SERBUK SARI : ASPEK MORFOLOGI, SISTEMATIKA DAN APLIKASINYA PADA TUMBUHAN KELUARGA MENTOL

2017 ◽  
Vol 2 (1) ◽  
pp. 12
Author(s):  
Sudarmono Sudarmono ◽  
Sahromi Sahromi
Keyword(s):  
Key Words ◽  
The Other ◽  
Dominant Factor ◽  
Cross Pollination ◽  
Stigma Surface ◽  
The Family ◽  
Male Organ ◽  
The Cross ◽  
Plant Pollen ◽  
Species Member

Pollen Powder or Sari : Aspects of Morphology, Systematics and Application on Menthol Family Plant          Pollen is the important component of plant to develop through reproductive. Pollen is the male organ of plants that plays an important role in the process of the evolution of plants. Menthol family plants (the Family Lamiaceae) is one of biggest families after Asteraceae. The process of the cross breeding often dominates the process of the evolution to the ment al Family. The research on the menthol Family's pollen aimed to know the affinity and the process of his pollination. The form of pollen of the Family Lamiaceae, was round and hexacolpate, the form was the same as the species member with their relatives. In the process of pollination often helped by the bee where pollen that clung to the abdomen part and the chest of the bee and moved to the other flower where the cross-pollination happen. The process of the cross-pollination happened also because of the same of maturity time between pollen of male and the stigma surface of female. The seed was still being the dominant factor in the reproductive in the Family Lamiaceae. Key words : Pollen, Pollination, Lamiaceae, the Mint family, the bee, the seed Abstrak          Serbuk sari atau dikenal dengan pollen merupakan komponen penting tanaman untuk berkembang melalui reproduktif. Serbuk sari merupakan organ jantan pada tumbuhan yang berperan penting dalam proses evolusi tumbuhan. Tumbuhan Keluarga Mentol (Famili Lamiaceae) merupakan salah satu Famili yang terbesar setelah Asteraceae. Proses perkawinan silang banyak mendominasi proses evolusi pada Keluarga Mentol. Penelitian terhadap serbuk sari Keluarga Mentol bertujuan untuk mengetahui kekerabatan dan proses penyerbukannya. Bentuk morfologi serbuk sari pada Famili Lamiaceae, yaitu bulat dan heksakolpat (hexacolpate), bentuk yang sama dengan jenis – jenis anggota Famili Lamiaceae. Pada proses penyerbukan banyak dibantu oleh lebah dimana pollen yang menempel pada bagian perut dan dada lebah penyerbuk dan berpindah pada bunga yang lain sehingga terjadi penyerbukan silang. Proses penyerbukan silang terjadi juga karena adanya waktu pemasakan yang sama antara serbuk sari sebagai organ jantan dan kepala putik sebagai organ betina. Biji masih merupakan faktor yang dominan pada perbanyakan Famili Lamiaceae.Kata kunci : Serbuk sari, Pollen, Lamiaceae, Keluarga Mentol, Lebah, biji.

scholarly journals Comparative Study on Fresh Transplant Production in the Major Strawberry Growing Areas of Egypt

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 849D-850
Author(s):  
Mohamed Ragab*
Keyword(s):  
Root Length ◽  
The Other ◽  
Planting Dates ◽  
Crown Diameter ◽  
Mother Plants ◽  
Total Carbohydrates ◽  
Number Of Leaves ◽  
Production Areas ◽  
Early Establishment

This study was carried out during 2002 and 2003 seasons in sandy soils at three different major strawberry production areas i.e. Ismailia (East Delta), Qaluobia (Middle Delta), and Nobaria (West Delta) to compare runner formation and fresh transplant production under four different nursery planting dates i.e. 1, 15, and 30 Apr. and 15 May. Camarosa cultivar was used. Data were recorded on number of main runners, number of fresh transplants dug in September, crown diameter, number of roots, root length, number of leaves, and carbohydrates content in roots and crowns of transplant. Results indicate that, there were significant increases in number of main runners, number of fresh transplants, number of roots, root length, and total carbohydrates in roots and crowns in Ismailia (East Delta) location as compared with other tested locations. On the other hand, Nobaria location showed the lowest value for the above mentioned studied characters. As for nursery planting date, planting nursery mother plants on 1 or 15 Apr. resulted in significant increments in number of runners and marketable fresh transplants as well as number and length of roots and total carbohydrates in roots and crown. However, plants planted in mid May gave the highest values of crown diameter. The study concluded that early establishment of strawberry nursery (first or mid April) is preferable to increase number and quality of fresh transplants. Moreover, Ismailia area (East Delta) was the best for transplant production as compared with the other tested locations. These results may be due to its microclimate condition.

scholarly journals lnvertebrate fauna on Norwegian spruce (Picea abies) branches in northern Finland

1990 ◽  
Vol 1 (4) ◽  
pp. 193-199 ◽  
Author(s):  
Anne Laine ◽  
Markku Orell ◽  
Juhani Itämies
Keyword(s):  
Picea Abies ◽  
The Other ◽  
Uneven Distribution ◽  
Invertebrate Fauna ◽  
Animal Groups ◽  
The Individual ◽  
Bothnian Bay ◽  
The City ◽  
Possible Cause

The invertebrate fauna living on old Norwegian spruce (Picea abies) branches was studied in the years 1986 and 1987 in four localities in northern Finland. Three of the study areas, Linnanmaa, Sanginjoki and Muhos, were located close to the coast of the Bothnian Bay. The fourth area, Taivalkoski, lays inland, in the most easterly location of the four. The numbers of invertebrates living on spruce branches varied seasonally, as well as between the individual branches of a sample. They were highest at Linnanmaa, near the city of Oulu, and lowest at Taivalkoski. The most abundant taxa were mites (Acarina), spiders (Araneae) and springtails (Collembola). As regards the total invertebrate index Linnanmaa differed significantly from the other areas. Most of the animal groups showed a similar trend as well. In addition to a geographical cline (from coast to inland), the level of pollution is considered a possible cause of the observed uneven distribution in invertebrate numbers.

scholarly journals 488 The Effect of Population Densities, Vine Training Methods, and Harvest Duration on Shoot Yield of Fluted Pumpkin (Telfairia occidentalis)

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 478C-478
Author(s):  
A.O. Olufolaji ◽  
Margaret J. Makinde ◽  
J.A. Akinfasoye
Keyword(s):  
Block Design ◽  
Fruit Production ◽  
The Other ◽  
Training Methods ◽  
Population Densities ◽  
Fluted Pumpkin ◽  
Telfairia Occidentalis ◽  
Randomized Block Design ◽  
Field Plots ◽  
Horticultural Research

Nursery-sown seedlings of Telfairia occidentalis were transplanted to the field plots of the National Horticultural Research Inst. in May 1998 and 1999. The treatment involved sowing using three population densities of 75,000; 45,000, and 30,000 plants/ha, which translates to 50 × 50-cm; 100 × 50-cm and 100 × 100-cm spacing. The second experiment involved sowing at 1 × 1-m spacing and one, two, four, zero, eight, and 12 harvests with staking vs. non-staking of vine methods. The studies were of a completely randomized block design using four replications. The results showed that most of the vegetation plant characters measured in the study on one hand were favored by 75,000 plants/ha, while, on the other hand, the highest fruit production occurred in 45,000 plants/ha. Harvesting eight to 12 times gave similar, but significantly higher,vegetative yield than the other lower frequencies. Nevertheless, fruit production in number and weight was superior in plants given the minimum (one or two) pruning. There were no significant differences in the measured plant characters of plants that were staked compared to the non-staked plants. However, fruit yield was better in staked than non-staked plants.

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