水稻两系不育系15HS1特征特性的研究

Study on the Characteristics of Rice Two-Line Sterile Line 15HS1

摘要: 为在生产上推广水稻两系不育系15HS1，以Y58S为对照，探究15HS1的农艺性状和异交特性。研究表明，15HS1分蘖能力强、株型紧凑、植株较矮，花期集中，育性转换温度低，柱头活力强。但其裂颖率高是该不育系一个致命的缺点，因此，该不育系还有待进一步改良，在保留其优点的基础上，降低其裂颖率。

Abstract: In order to promote the production of two lines of sterile lines of rice, 15HS1, with Y58S as a contrast, the agronomic characters and heterogenetic characteristics of 15HS1 were studied. The results show that 15HS1 has strong tillering ability, compact plant type, shorter plant, concentrated flowering period, low fertility conversion temperature, and strong activity of stigma. However, its high cracking rate is a drawback of the sterile line. Therefore, the sterile line still needs to be fur-ther improved to reduce its cracking rate on the basis of retaining its advantages.