scholarly journals Is the yield change due to warming affected by photoperiod sensitivity? Effects of the soybean E4 locus

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Etsushi Kumagai ◽  
Tetsuya Yamada ◽  
Toshihiro Hasegawa
Keyword(s):  
Photoperiod Sensitivity ◽  
Yield Change

Scoring Photoperiod Sensitivity in Barley 1

Crop Science ◽  
1978 ◽  
Vol 18 (5) ◽  
pp. 897-898 ◽  
Author(s):  
Thomas L. Tew ◽  
D. C. Rasmusson
Keyword(s):  
Photoperiod Sensitivity

scholarly journals Overexpression of a methyl-CpG-binding protein gene OsMBD707 leads to larger tiller angles and reduced photoperiod sensitivity in rice

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mengyu Qu ◽  
Zhujian Zhang ◽  
Tingmin Liang ◽  
Peipei Niu ◽  
Mingji Wu ◽  
...  
Keyword(s):  
Expression Patterns ◽  
Photoperiod Sensitivity ◽  
Rna Seq ◽  
Active Expression ◽  
Binding Protein Gene ◽  
Flowering Regulator ◽  
Regulator Genes ◽  
Mbd Protein ◽  
Delayed Flowering ◽  
Mbd Proteins

Abstract Background Methyl-CpG-binding domain (MBD) proteins play important roles in epigenetic gene regulation, and have diverse molecular, cellular, and biological functions in plants. MBD proteins have been functionally characterized in various plant species, including Arabidopsis, wheat, maize, and tomato. In rice, 17 sequences were bioinformatically predicted as putative MBD proteins. However, very little is known regarding the function of MBD proteins in rice. Results We explored the expression patterns of the rice OsMBD family genes and identified 13 OsMBDs with active expression in various rice tissues. We further characterized the function of a rice class I MBD protein OsMBD707, and demonstrated that OsMBD707 is constitutively expressed and localized in the nucleus. Transgenic rice overexpressing OsMBD707 displayed larger tiller angles and reduced photoperiod sensitivity—delayed flowering under short day (SD) and early flowering under long day (LD). RNA-seq analysis revealed that overexpression of OsMBD707 led to reduced photoperiod sensitivity in rice and to expression changes in flowering regulator genes in the Ehd1-Hd3a/RFT1 pathway. Conclusion The results of this study suggested that OsMBD707 plays important roles in rice growth and development, and should lead to further studies on the functions of OsMBD proteins in growth, development, or other molecular, cellular, and biological processes in rice.

The relationship among freezing tolerance, vernalization requirement, Ppd alleles and winter hardiness in European wheat cultivars

2017 ◽  
Vol 155 (9) ◽  
pp. 1353-1370 ◽  
Author(s):  
A. GORASH ◽  
R. ARMONIENĖ ◽  
Ž. LIATUKAS ◽  
G. BRAZAUSKAS
Keyword(s):  
Molecular Markers ◽  
Western Europe ◽  
Complex Trait ◽  
Winter Hardiness ◽  
Photoperiod Sensitivity ◽  
The Other ◽  
Wheat Cultivars ◽  
Crucial Component ◽  
Per Se ◽  
The Relationship

SUMMARYWinter hardiness of wheat is a complex trait involving a system of structural, regulatory and developmental genes, which interact in a complex pathway. The objective of the present work was to study the relationship among the main traits determining the level of adaptation and the possibility for target manipulation of breeding material by using molecular markers and phenological parameters. Wheat cultivars from different ecoclimatic environments of Europe were included for analysis. Gene-specific assay showed that photoperiod sensitivity of the studied cultivars was determined by polymorphism in the Ppd-D1 allele. The study established the relationship among winter hardiness, LT50 (the temperature at which 50% of plants are killed), photoperiod sensitivity, vernalization duration and earliness per se genes in the environment of Lithuania. The cultivars from Northern and Western Europe exhibited stronger requirement for vernalization and photoperiod. Although the group of cultivars from the southern latitudes were characterized by earliness, they possessed a stronger level of LT50. The level of LT50 was found to be the most crucial component of winter hardiness, the other traits served as supplementary components.

Evaluation of soybean breeding lines by examining their responses to sowing date and row spacing

1987 ◽  
Vol 27 (5) ◽  
pp. 721 ◽  
Author(s):  
IA Rose
Keyword(s):  
Protein Concentration ◽  
Sowing Date ◽  
Photoperiod Sensitivity ◽  
Row Spacing ◽  
Breeding Lines ◽  
Cultivar Selection ◽  
Sowing Dates ◽  
Oil Concentration ◽  
Standard Cultivar ◽  
Late Sowing

Seven genotypes, including 5 in the final stages of cultivar selection, were evaluated for their phenological development, yield, seed size, oil concentration and protein concentration in response to changes in sowing date and row spacing over 3 seasons, 1982-83, 1983-84and 1984-85. Genotype x sowing date interactions were detected for both phenological development and yield, particularly with the cultivar Sxy 59. This genotype was most affected by temperature during the pre-flowering phase of early November sowings. It was lower yielding in November sowings but was the highest yielding genotype in January sowings. Its adaptation to January sowings was unexpected because this genotype also showed high photoperiod sensitivity and flowered and matured rapidly in the late sowings. With early sowing, yield of the other cultivars was equivalent, or superior to (P=0.05), that obtained with the recommended early December sowing date, depending on the season. Late sowings caused yield reductions of about 34%. Increases in yield with narrow rows (50 v. 100 cm) were significant (P = 0.05) in 1 season and averaged 5% overall. Genotypexrow spacing interactions were only detected in 1 season, but no genotype was superior to the standard cultivar, Forrest, in adaptation to narrow rows. Thus this study revealed genotype responses which would affect adoption of newly released cultivars. It was concluded that this type of study is valuable in the final stages of a selection program and that these studies should include both early and late sowing dates and be conducted over several seasons.

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