To explore biotypes, genetic characteristics of weedy rice in Jiangdu, Jiangsu Province, China, and their genetic effect on yield of cultivated rice, morphological characteristics were detected and cluster analysis was conducted based on SSR markers. The results showed that the weedy rice materials can be divided into two biotypes: One is dwarf, including JDWRA and JDWRC, the other one is tall, including JDWRB; the two biotypes of weedy rice belong to indica, JDWRA was most related to JDWRC, the dwarf type of weedy rice was distantly related to the tall type, and closely related to indica male sterile line Zhenshan 97A. The competition test between weedy rice and cultivated rice indicated that the dwarf type of weedy rice more significantly influenced on yield factors of cultivated rice.
SUN Xingqiang1，2, ZHOU Yongjun1, LU Yongliang1, CHEN Lijuan2, YU Liuqing1,*
. Effect of Two Biotypes of Jiangdu Weedy Rice at Various Transplanting Densities on Growth of Cultivated Rice and Their Genetic Relationship[J]. Chinese Journal OF Rice Science, 2012
, 26(1)
: 118
-122
.
DOI: 10.3969/j.issn.10017216.2012.01.018
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