水稻两用核不育系G156S生育特性研究

Study on Growth Characteristics of Rice Thermo-sensitive Genic Male Sterile Line G156S

对G156S的生育特性研究结果表明:播期与播抽历期呈0.01极显著负相关关系;有效积温(>10℃)对主茎叶片数、株高、穗粒数、分蘖数的影响达0.01极显著性差异水平,呈负相关关系,表明G156S感温性较强;其叶片披垂,披垂比例为0.3,披垂度较大,为109°。

The growth characteristics of rice thermo-sensitive genic male sterile line G156S were studied, the results showed that the days from sowing to heading was influenced and reached significantly negative correlation by different seeding period; the effective accumulated tempera- ture（ 〉 10~C ）made an influence to significantly level and as negative correlation to the numbers of main stem leaves, plant height, the num- bers of spikes and tiller, it indicated that G156S was developmentally temperature-sensitive; the leaves of G156S droopy, the drooping propor- tion was 0.3 and the drooping degree was 109°.