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GrainGenes Reference Report: PBR-118-574

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Reference	PBR-118-574
Title	Analysis of embryo, endosperm, cytoplasmic and maternal effects for heterosis of protein and lysine content in indica hybrid rice
Journal	Plant Breeding
Year	1999
Pages	574-576
Author	Shi CH Zhu J Wu JG Yang XE Yu YG
Abstract	Summary: The heterosis controlled by genetic main effects and genotype X environment (GE) interaction effects for protein content and lysine content traits of indica hybrid rice, Oryza sativa L., was studied by using a genetic model for quantitative traits of triploid endosperm. The experiment was conducted over 2 years in a factorial design that included nine cytoplasmic male-sterile lines as females and five restorer lines as males. It was revealed that heterosis of protein content and lysine content were simultaneously controlled by genetic main effects and GE interaction effects. Maternal general heterosis and maternal interaction heterosis were observed. Embryo heterosis or cytoplasm heterosis for lysine content and endosperm heterosis for protein content were more important in general heterosis. Embryo interaction heterosis and cytoplasm interaction heterosis were more important for protein content, but endosperm heterosis was only important for lysine content in GE interaction heterosis. It was shown that some indica hybrid crosses had significant positive heterosis for protein content. Negative heterosis for lysine content was observed in most hybrid crosses
Keyword	[ Hide all but 1 of 21 ] cytoplasm cytoplasmic inheritance embryo endosperm environment genetic effects genotype genotype environment interaction heterosis hybrid hybrid rice indica lysine maternal effects model oryza sativa plant embryos protein composition protein content quantitative traits rice

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