Comparison on major traits of cutting propagation and seed propagation in male sterile lines of rice
[Objective] Agronomic, economic and fertile traits based on different rice propagation methods were explored. [ Method ] Using two cytoplasmic male sterile lines and two photo-thermo-sensitive genie male sterile lines as test materials, some rice parameters including plant height, total grain number per spike, effective panicles, panicle length, plant and leaf type, bagged seed setting rate, etc. on cutting propagation and seed propagation were surveyed at cutting (planting) period, initial heading stage and heading period ,respectively. [Result]Compared to seed propagation, shorter growth period, lower plant height, more effective panicles, shorter panicle length, less grain number per spike, greater growth vigor, thicker leaf color and poorer group uniformity of the test lines were found in rice cutting propagation, and no differences were found in pollen fertility and bagged seed setting rate in the two different rice propagation methods. Compared with the eytoplasmic male sterile lines,the above mentioned parameters of photo-thermo-sensitive male sterile lines performed much better in rice cutting propagation. [Conclusion]Despite certain differences in rice agronomic and economic traits, the two kinds of propagation methods did not affect the fertility of test lines. Photo-thermo-sensitive male sterile line is more suitable for cutting propagation, which could be applied in hybrid seed production.
国家科技期刊平台
NSTL
万方数据
维普
