译 名：
Distribution of Dehiscent Seeds on the Panicles of Cytoplasmic Male Sterile Lines in Rice
作 者：
LIU Xiao-xia,CHEN Li-yun*,ZHANG Gui-lian (Institute of Rice Research,Hunan Agricultural University,Changsha,Hunan 410128,China)
关键词：
rice;cytoplasmic male sterile line;seeds with dehiscing glume;distribution
摘 要：
The percentages of dehiscent seeds,i.e.,the seeds with unclosed or dehiscing glume,of four pairs of cytoplasmic male sterile and maintainer lines with different extent of seed dehiscence and the distribution of dehiscent seeds on the panicles of the four male sterile lines were studied.The results showed that the seed dehiscence of the maintainer lines was lighter than that of the male sterile lines,and there existed a significant positive correlation between the percentages of dehiscent seeds of the male sterile lines and those of their corresponding maintainer lines.The extent of seed dehiscence on the same panicle of the male sterile lines was related to the order of spikelet opening,and a later opening of spikelets resulted in a higher percentage of dehiscent seeds.The percentage of dehiscent seeds of superior panicles was lower than that of inferior panicles;that of the primary branches was lower than that of the secondary branches;that of the upper positioned seeds on the panicles was lower than that of the middle positioned ones,and the latter was lower than that of the lower positioned ones;that of the sixth seeds was the lowest and the second seed was relatively higher on the same primary branch;and that of superior grains was lower than that of inferior grains.
