The effects of ecological environments on plant type traits and its relationship with yield traits were studied with two F2 populations, one derived from the cross between Wanlun 422 (indica) and Shennong 265 (japonica) named as F2A, the other derived from the cross between Luhui 99 (indica) and Shennong 265 (japonica) named as F2B, in Liaoning and Sichuan. The result showed that the ecological conditions had a significant effect on plant type traits and yield traits. From Sichuan to Liaoning, the plant height and panicle curvature increased significantly, the panicle length, flag leaf length, flag leaf width and leaf angle decreased. Number of panicles, 1000grain weight, seed setting rate and yield in Liaoning were significantly higher than those in Sichuan; Grain number per panicle in Sichuan was significantly more than that in Liaoning. In the four plant type patterns, the number of panicles, 1000grains weight, seed setting rate and yield showed a trend as follows: Cw type(long flag leaf, curved panicle) > Cz type(long flag leaf, erect panicle) > Dw type(short flag leaf, curved panicle) > Dz type(short flag leaf, erect panicle). Cz and Cw type rice showed higher numbers of panicles and grains per panicle for Dz type, the figures were the smallest among the four types. For all the four types, the flag leaf length was not significantly correlated with all of the yield traits, while the flag leaf width was significantly correlated with number of panicles. In Liaoning, the seed setting rate showed a significantly negative correlation with flag leaf width. The panicle curvature showed a significantly positive correlation with the seed setting rate and yield traits in Sichuan Province, but it was not significantly correlated with most of yield traits in Liaoning Province.
JIN Feng1, XU Hai1, JIANG Yijun2, ZHAO Mingzhu1, ZHOU Ping1, YANG Li3, LI Maobai4, XU Zhengjin1，*, CHEN Wenfu1, ZHENG Jiakui3
. Effect of Ecological Environments on Plant Type Traits and Yield Traits in F2 of Cross Between indica and japonica[J]. Chinese Journal OF Rice Science, 2013
, 27(1)
: 49
-55
.
DOI: 10.3969/j.issn.10017216.2013.01.007
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