Genetic Analysis of Grain Plumpness in Intersubspecific Hybrid Rice

doi:10.3321/j.issn:1000-7091.2000.02.002

Abstract

Abstract: The grain plumpness was genetically analyzed on 25 intersubspecifichybrid rice combinations from 5 japonica sterile lines each crossed with 5 wide-compatible varieties. It was found that the grain plumpness was better on upper spikelet but worse on lower spikelet for a given panicle. The grain plumpness was genetically controlled with major additive effect, and the inheritance ability was over 0.82. Path-analysis further revealed that this grain plumpness was also influenced by other factors, mainly plump grains, 1000-grain weight, seed-setting ratio and fertilized grains.

Key words: Rice, Intersubspecific hybrid rice, Grain plumpness, Genetics

CLC Number:

S511.101

LI Ronggai, MENG Lingqi, FENG Ruiguang, NING Wenshu. Genetic Analysis of Grain Plumpness in Intersubspecific Hybrid Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(2): 6-10. doi: 10.3321/j.issn:1000-7091.2000.02.002.

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