Improving soybean breeding using UAS measurements of physiological maturity

2019 ◽  
Author(s):  
Balaji Narayanan ◽  
Brice Floyd ◽  
Kevin Tu ◽  
Landon Ries ◽  
Neil Hausmann
Keyword(s):  
Soybean Breeding ◽  
Physiological Maturity

Radii Epiphyseal Closure as an Indicator of Physiological Maturity in Beef Carcasses3

1972 ◽  
Vol 34 (1) ◽  
pp. 42-45 ◽  
Author(s):  
D. L. Grant ◽  
H. J. Tuma ◽  
R. C. Covington ◽  
A. D. Dayton
Keyword(s):  
Physiological Maturity ◽  
Epiphyseal Closure

Identification of novel haplotype of a cyst nematode resistance gene, GmSNAP18 in soybean [Glycine max (L.) Merr.]

2020 ◽  
Vol 80 (03) ◽  
Author(s):  
Ik-Young Choi ◽  
Prakash Basnet ◽  
Hana Yoo ◽  
Neha Samir Roy ◽  
Rahul Vasudeo Ramekar ◽  
...  
Keyword(s):  
Soybean Cyst Nematode ◽  
Gene Families ◽  
Nematode Resistance ◽  
Cyst Nematode ◽  
Soybean Breeding ◽  
Resistant Varieties ◽  
Soybean Genotypes ◽  
Glycine Max L ◽  
Scn Resistance

Soybean cyst nematode (SCN) is one of the most damaging pest of soybean. Discovery and characterization of the genes involved in SCN resistance are important in soybean breeding. Soluble NSF attachment protein (SNAP) genes are related to SCN resistance in soybean. SNAP genes include five gene families, and 2 haplotypes of exons 6 and 9 of SNAP18 are considered resistant to the SCN. In present study the haplotypes of GmSNAP18 were surveyed and chacterized in a total of 60 diverse soybean genotypes including Korean cultivars, landraces, and wild-types. The target region of exons 6 and 9 in GmSNAP18 region was amplified and sequenced to examine nucleotide variation. Characterization of 5 haplotypes identified in present study for the GmSNAP18 gene revealed two haplotypes as resistant, 1 as susceptible and two as novel. A total of twelve genotypes showed resistant haplotypes, and 45 cultivars were found susceptible. Interestingly, the two novel haplotypes were present in 3 soybean lines. The information provided here about the haplotypic variation of GmSNAP18 gene can be further explored for soybean breeding to develop resistant varieties.

ПРОДОЛЖИТЕЛЬНОСТЬ И ИНТЕНСИВНОСТЬ ИСПОЛЬЗОВАНИЯ КОРОВ С РАЗНЫМ ВОЗРАСТОМ И ЖИВОЙ МАССОЙ ПРИ ПЕРВОМ ОТЕЛЕ

2019 ◽  
pp. 42-45 ◽  
Author(s):  
D.G. KOMKOV ◽  
R.M. KERTIEV ◽  
N.M. KERTIEVA
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Holstein Cows ◽  
Physiological Maturity ◽  
Entire Life ◽  
Economic Use

Приведены результаты исследований продолжительности и интенсивности использования коров голштинской породы с разным возрастом и живой массой при первом отеле, являющиеся показателями физиологической зрелости и готовности организма к последующему продуктивному периоду жизни. Наиболее продолжительный продуктивный период выявлен у коров с возрастом первого отела 2427 мес., средние значения которых составляют 3,33,4 отела. Указанные группы коров отличаются более высоким уровнем пожизненной продуктивности и интенсивностью использования на единицу времени всей жизни и продуктивного периода. Продуктивное долголетие коров имеет тенденцию к повышению с увеличением массы тела при первом отеле. Наиболее продолжительные сроки хозяйственного использования выявлены у животных с живой массой при первом отеле 450500 кг, продуктивный период которых на 115234 дня, или на 0,40,6 лактаций выше, чем в других анализируемых группах скота. Высокую пожизненную продуктивность (3135 тыс. кг) имеют животные с массой тела более 500 кг при первом отеле. Вместе с тем интенсивный раздой наиболее крупных первотелок с массой тела выше 550 кг сопровождается снижением продолжительности жизни и продуктивного периода использования коров.The article presents the results of studies on the duration and intensity of use of Holstein cows with different age and body weight at the first calving, which are an indicator of physiological maturity and readiness of the organism for the subsequent productive period of life. The longest productive period was revealed in cows with the first calving age of 2427 months, the average values of which are 3.33.4 calving. These groups of cows are distinguished by a higher level of lifelong production and the intensity of use per unit of time of their entire life and productive period. Productive longevity of cows tends to increase with an increase in body weight at the first calving. The longest periods of economic use were found in animals with a live weight at the first calving with in 450500 kg, in which the productive period is 115234 days or 0.40.6 lactations higher than in other analyzed groups of animals. High lifelong productivity (3135 thousand kg) have animals weighing more than 500 kg at the first calving. At the same time, intensive stripping of the largest heifers with a body weight above 550 kg is accompanied by a decrease in the lifespan and productive period of using cows.

Genetic Gain of Soybean Breeding for Yield in Henan Summer Soybean Zone over the Last 30 Years

2016 ◽  
Vol 42 (7) ◽  
pp. 1009
Author(s):  
Zhong-Wen HUANG ◽  
Xin-Juan XU ◽  
Wei WANG ◽  
Pei-Pei MEI
Keyword(s):  
Genetic Gain ◽  
Soybean Breeding

scholarly journals Seed shattering phenology at soybean harvest of economically important weeds in multiple regions of the United States. Part 1: broadleaf species

Weed Science ◽  
2020 ◽  
pp. 1-29
Author(s):  
Lauren M. Schwartz-Lazaro ◽  
Lovreet S. Shergill ◽  
Jeffrey A. Evans ◽  
Muthukumar V. Bagavathiannan ◽  
Shawn C. Beam ◽  
...  
Keyword(s):  
The United States ◽  
Ambrosia Artemisiifolia ◽  
Retention Rates ◽  
Weed Species ◽  
Physiological Maturity ◽  
Seed Retention ◽  
Northern Latitudes ◽  
Multiple Regions ◽  
Broadleaf Species ◽  
Crop Maturity

Abstract Potential effectiveness of harvest weed seed control (HWSC) systems depends upon seed shatter of the target weed species at crop maturity, enabling its collection and processing at crop harvest. However, seed retention likely is influenced by agroecological and environmental factors. In 2016 and 2017, we assessed seed shatter phenology in thirteen economically important broadleaf weed species in soybean [Glycine max (L.) Merr.] from crop physiological maturity to four weeks after physiological maturity at multiple sites spread across fourteen states in the southern, northern, and mid-Atlantic U.S. Greater proportions of seeds were retained by weeds in southern latitudes and shatter rate increased at northern latitudes. Amaranthus species seed shatter was low (0 to 2%), whereas shatter varied widely in common ragweed (Ambrosia artemisiifolia L.) (2 to 90%) over the weeks following soybean physiological maturity. Overall, the broadleaf species studied shattered less than ten percent of their seeds by soybean harvest. Our results suggest that some of the broadleaf species with greater seed retention rates in the weeks following soybean physiological maturity may be good candidates for HWSC.

scholarly journals Multispectral Assessment of Sweet Pepper (Capsicum annuum L.) Fruit Quality Affected by Calcite Nanoparticles

Biomolecules ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 832
Author(s):  
Monika Vidak ◽  
Boris Lazarević ◽  
Marko Petek ◽  
Jerko Gunjača ◽  
Zlatko Šatović ◽  
...  
Keyword(s):  
Convex Hull ◽  
Capsicum Annuum ◽  
Fruit Quality ◽  
Sweet Pepper ◽  
Quality Analysis ◽  
Morphological Properties ◽  
Agricultural Practice ◽  
Vegetable Crops ◽  
Physiological Maturity ◽  
Capsicum Annuum L

Sweet pepper (Capsicum annuum L.) is one of the most important vegetable crops in the world because of the nutritional value of its fruits and its economic importance. Calcium (Ca) improves the quality of sweet pepper fruits, and the application of calcite nanoparticles in agricultural practice has a positive effect on the morphological, physiological, and physicochemical properties of the whole plant. The objectives of this study were to investigate the effect of commercial calcite nanoparticles on yield, chemical, physical, morphological, and multispectral properties of sweet pepper fruits using a combination of conventional and novel image-based nondestructive methods of fruit quality analysis. In the field trial, two sweet pepper cultivars, i.e., Šorokšari and Kurtovska kapija, were treated with commercial calcite nanoparticles (at a concentration of 3% and 5%, calcite-based foliar fertilizer (positive control), and water (negative control) three times during vegetation). Sweet pepper fruits were harvested at the time of technological and physiological maturity. Significant differences were observed between pepper cultivars as well as between harvests times. In general, application of calcite nanoparticles reduced yield and increased fruit firmness. However, different effects of calcite nanoparticles were observed on almost all properties depending on the cultivar. In Šorokšari, calcite nanoparticles and calcite-based foliar fertilizers significantly increased N, P, K, Mg, Fe, Zn, Mn, and Cu at technological maturity, as well as P, Ca, Mg, Fe, Zn, Mn, Cu, and N at physiological maturity. However, in Kurtovska kapija, the treatments increased only Ca at technological maturity and only P at physiological maturity. The effect of treatments on fruit morphological properties was observed only at the second harvest. In Šorokšari, calcite nanoparticles (3% and 5%) increased the fruit length, minimal circle area, and minimal circle radius, and it decreased the fruit width and convex hull compared to the positive and negative controls, respectively. In Kurtovska kapija, calcite nanoparticles increased the fruit width and convex hull compared to the controls. At physiological maturity, lower anthocyanin and chlorophyll indices were found in Kurtovska kapija in both treatments with calcite nanoparticles, while in Šorokšari, the opposite effects were observed.

scholarly journals Influence of Cultivar on the Postharvest Hardening of Trifoliate Yam (Dioscorea dumetorum) Tubers

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Christian Siadjeu ◽  
Emmanuel Akdowa Panyoo ◽  
Gabriel Mahbou Somo Toukam ◽  
Joseph Martin Bell ◽  
Benoit Nono ◽  
...  
Keyword(s):  
High Altitude ◽  
Breeding Program ◽  
Ambient Conditions ◽  
Flesh Colour ◽  
Physiological Maturity ◽  
Yellow Flesh ◽  
Low Altitude ◽  
Trifoliate Yam

The influence of cultivar on the postharvest hardening ofDioscorea dumetorumtubers was assessed. 32 cultivars ofD. dumetorumtubers were planted in April 2014, harvested at physiological maturity, and stored under prevailing tropical ambient conditions (19–28°C, 60–85% RH) for 0, 5, 14, 21, and 28 days. Samples were evaluated for cooked hardness. Results showed that one cultivar, Ibo sweet 3, was not affected by the hardening phenomenon. The remaining 31 were all subject to the hardening phenomenon at different degree. Cooked hardness increased more rapidly in cultivars with many roots on the tuber surface compared to cultivars with few roots on the tuber surface. When both the characteristics flesh colour and number of roots on tuber surface were associated, cooked hardness in cultivars with yellow flesh and many roots increased more rapidly than in cultivars with white flesh and many roots, whereas cooked hardness in cultivars with yellow flesh and few roots increased more slowly than in cultivars with white flesh and few roots. Accessions collected in high altitude increased more rapidly compared to accessions collected in low altitude. The cultivar Ibo sweet 3 identified in this study could provide important information for breeding program ofD. dumetorumagainst postharvest hardening phenomenon.

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