Plant Height Genetic Dissection of Introgression Groups of Indica Rice Restoror

doi:10.7668/hbnxb.2010.02.014

Abstract

Abstract: 6 introgression groups of indica rice restorer were developed from BC2F2 by utilizing Shuhui 527 and Minghui 86,2 widely-used indica rice restorers,respectively as recipient lines,and 3 other rice lines as donors.12 main-effect QTLs and 145 pairs of epistasis between 2 marks at 0.01 significance level of plant height in total from 2 trials of the 6 groups were detected by one and two way ANOVA.Genetic stability and specialization of the QTLs and epistasis pairs were simultaneously taking action across groups and trails.Many marks were connected by epistasis or genetic link,which cooperated in rice plant height and constructed genetic network of rice plant height.As found,most main-effect QTLs or marks closely linking to them were invoved in epistases,which inferred that epistasis was the cause of main-effect QTL.At last,the strategy of increasing rice production by modifying plant height is given.

Key words: Rice, Selection introgression group, Plant height, Genetic dissection, Epstasis

CLC Number:

S511.03

WANG Hui, QIAN Yi-liang, ZHANG Hong-jun, CHEN Man-yuan, XIA Jia-fa, LI Ze-fu, SHI Ying-yao, WU Xian-feng, WANG An-dong, ZHU Ling-hua, GAO Yong-ming, XU Zheng-jin. Plant Height Genetic Dissection of Introgression Groups of Indica Rice Restoror[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(2): 69-77. doi: 10.7668/hbnxb.2010.02.014.

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