籼稻淀粉糊化粘度特性的基因型与环境互作效应分析

Analysis of genotype x environment interaction effects for starch pasting viscosity characteristics in Indica rice.

作者信息

Bao Jin-Song, Shen Sheng-Quan, Xia Ying-Wu

机构信息

Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China.

出版信息

Yi Chuan Xue Bao. 2006 Nov;33(11):1007-13. doi: 10.1016/S0379-4172(06)60136-4.

DOI:10.1016/S0379-4172(06)60136-4

PMID:17112972

Abstract

Milled rice (Oryza sativa L.) is composed of approximately 90% starch. The properties of starch have considerable effects on cooked rice palatability and consumer acceptability. Starch pasting viscosity parameters serve as important indices in the estimation of eating, cooking, and processing qualities of rice. In the present study, four cytoplasmic male-sterile (CMS) lines and eight restorer (R) lines have been used in an incomplete diallel cross to analyze seed effects, cytoplasmic effects, maternal gene effects, and their genotype x environment (GE) effects on the following starch pasting viscosity parameters: breakdown (BD), consistency (CS), and setback (SB). The results demonstrated that the total main genetic variances (V(G)) accounted for over 64% of the total genetic variance (V(G) +V(GE)) for the three traits, indicating that these traits were mainly controlled by the main genetic effects in addition to the GE interaction effects. The estimated total narrow-sense heritability were 67.8%, 79.5%, and 79.5% for BD, CS, and SB, respectively. The general heritability (h(2)(G)) accounted for over 75% of the total heritability (h(2)(G) +h(2)(GE)), indicating that early selection would be effective for those traits and the selection efficiencies were relatively stable in different environments.

摘要

糙米（Oryza sativa L.）约由90%的淀粉组成。淀粉特性对米饭适口性和消费者接受度有相当大的影响。淀粉糊化粘度参数是评估稻米食用、蒸煮和加工品质的重要指标。在本研究中，四个细胞质雄性不育（CMS）系和八个恢复系（R）用于不完全双列杂交，以分析种子效应、细胞质效应、母体基因效应及其基因型×环境（GE）效应，对以下淀粉糊化粘度参数的影响：崩解值（BD）、稠度（CS）和回生值（SB）。结果表明，三个性状的总主遗传方差（V(G)）占总遗传方差（V(G)+V(GE)）的64%以上，表明这些性状除受GE互作效应影响外，主要受主遗传效应控制。BD、CS和SB的估计狭义遗传力分别为67.8%、79.5%和79.5%。广义遗传力（h(2)(G)）占总遗传力（h(2)(G)+h(2)(GE)）的75%以上，表明对这些性状进行早期选择是有效的，且选择效率在不同环境中相对稳定。