The relationship among phenotype, heterosis and combining ability of hybrid rice

doi:10.14088/j.cnki.issn0439-8114.2020.24.005

HUBEI AGRICULTURAL SCIENCES ›› 2020, Vol. 59 ›› Issue (24): 24-28.doi: 10.14088/j.cnki.issn0439-8114.2020.24.005

• Breeding & Cultivation • Previous Articles Next Articles

The relationship among phenotype, heterosis and combining ability of hybrid rice

CHEN Jun-xiao, YOU Ai-qing, LIU Kai

Hubei Key laboratory of Food Crop Germplasm and Genetic Improvement/Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China

Received:2020-10-15 Online:2020-12-25 Published:2021-01-21

Abstract

Abstract: We constructed a NCII population and performed a high-throughput phenotyping facility (HRPF) and combined with artificial investigation to measure all traits, to investigate the relationship between phenotype, general combining ability, special combining ability and heterosis of yield-related traits. The results showed that there were high correlations among phenotype, SCA, GCA and heterotic advantage for all traits. The phenotype was always positively correlated with GCA and SCA, but GCA and SCA contributed variously to different agronomic traits;heterotic advantage always positively correlated with GCA and SCA, and SCA contribute more to the heterosis. GCA always negatively or not correlated with SCA, the correlations with heterosis and parent genetic distance (PGD) and observed heterozygosity (OH) were not particularly evident in our data.

Key words: heterosis, NCII population, general combining ability, specific combining ability

CLC Number:

S511

CHEN Jun-xiao, YOU Ai-qing, LIU Kai. The relationship among phenotype, heterosis and combining ability of hybrid rice[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(24): 24-28.

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The relationship among phenotype, heterosis and combining ability of hybrid rice

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