Microbiome effects on hybrid vigour

Nature Plants ◽  
2021 ◽  
Author(s):  
Chris Surridge
Keyword(s):  
Hybrid Vigour

Epigenetics in plants—vernalisation and hybrid vigour

2011 ◽  
Vol 1809 (8) ◽  
pp. 427-437 ◽  
Author(s):  
Michael Groszmann ◽  
Ian K. Greaves ◽  
Nicolas Albert ◽  
Ryo Fujimoto ◽  
Chris A. Helliwell ◽  
...  
Keyword(s):  
Hybrid Vigour

scholarly journals Hybrid Vigour and Fibre Production

Nature ◽  
1930 ◽  
Vol 125 (3147) ◽  
pp. 279-280
Keyword(s):  
Fibre Production ◽  
Hybrid Vigour

scholarly journals The Effects of Combining Ability for Yield Traits in Rice (Oryza sativa L.) under Sodic Soil

2020 ◽  
pp. 34-44
Author(s):  
Durgesh Kumar Shukla ◽  
S. N. Singh ◽  
S. C. Gaur ◽  
Anil Kumar
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Hybrid Vigour ◽  
Yield Traits ◽  
Additive Gene Action ◽  
Early Maturity ◽  
Additive Gene ◽  
Rice Genotypes ◽  
Positive Effect

Information on combining ability is derived from data on twelve yield and yield contributing characters in fifteen male and three female parents utilised in line x tester fashion to estimate combining ability of rice genotypes under coastal saline condition. Forty Five hybrids generated from crossing three lines with fifteen testers were studied along with their parents for combining ability and gene action involved in the expression of characters in rice. The gca and sca effects were significant for all the characters. The magnitude of sca variance was higher than the gca variance for all the characters revealed the presence of predominance of non-additive gene action for all the characters under study. Halchal (-12.29) was found to be good general combiners for days to 50% flowering and early maturity, Halchal (-13.39). However, IR-24 (1.88) was good general combiners with significant positive effect for tallness. Magic (-12.05) good general combiners for dwarfness and Shriram 434 (1.57) was good general combiners for test weight however, Moti was best general combiner with gca estimates of 7.07 for harvest index and Kuber (3.48) was the good general combiners for yield/hill. Cross combinations RHR 27 x IR 24 (4.04) was significant and positive effect for yield/hill, performance for ear bearing tillers per plant were RHR 27 x IR 24 (1.88). In general, the crosses showing significant and desirable combining ability effects were associated with better per se performance for the respective traits. These hybrids could be utilized in heterosis breeding to exploit hybrid vigour.

scholarly journals Mutant alleles differentially shape cattle complex traits and fitness

2021 ◽  
Author(s):  
Ruidong Xiang ◽  
Ed Breen ◽  
Sunduimijid Bolormaa ◽  
Christy Vander Jagt ◽  
Amanda Chamberlain ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Complex Traits ◽  
Somatic Cell Count ◽  
Protein Concentration ◽  
Opposite Effect ◽  
Gestation Length ◽  
Hybrid Vigour ◽  
Term Selection

Classical mutations tend to be deleterious to traits and fitness. Is this the case for mutations with polygenic effects? Here, we infer ancestral and mutant alleles (MAs) for 8 million sequence variants in 113k cattle and quantify the effects of MA on 37 complex traits. Heterozygosity at sites conserved across 100 vertebrates increase fertility, stature, and milk production, positively associating these traits with fitness. MAs decrease fat and protein concentration in milk and stature but increase gestation length and somatic cell count in milk indicative of mastitis. However, the frequency of MAs that decrease fat and protein concentration and stature and increase gestation length and somatic cell count is lower than the frequency of MAs with the opposite effect. These results suggest bias in the direction of effect of mutation (e.g. towards reduced protein in milk), but selection operating to reduce the frequency of these MAs. MAs with a large-effect decrease protein and milk yield, while small-effect MAs increase the two traits. These results imply two classes of genomic sites subject to long-term selection: sites conserved across vertebrates show hybrid vigour while sites subject to less long-term selection show a bias in mutation towards alleles that are selected against.

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