Genetic Multiple-effects of Erect Panicle Type Rice
JIN Xue-hua1,2,WANG Jia-yu2,XU Zheng-jin2,ZHANG Wen-zhong2,CHEN Wen- fu2,ZHANG Long-bu2 (1 Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650224,China; 2 Shenyang Agricultural University, Shenyang 110161,China)
The erect panicle type rice Liaojing 5 was crossed with the curved panicle type Fengjin, and different panicle type rice lines of F5 generation derived from the single F4 plants were obtained. By analyzing the relationships between erect panicle traits and other characters, the results showed:1.The erect panicle rice was dwarf plant height, wide and short leaves, long leaf sheath and short upper internode;the curved panicle rice was while conversed. 2.Secondary branches, secondary branch grains and empty seed ratio of different panicle types had the similar distribution on the panicle axis, and the empty-seed ratio on secondary branches of erect panicle type was markedly higher than that of curved panicle type, but not on primary branches. High seed setting rate on primary branches and more secondary branch grains distributed on the upper part of erect panicle were beneficial to improvement of seed setting rate. 3. Erect panicle trait was incompletely dominant.