生态核不育大麦育性转换条件的研究  

STUDIES ON THE CONDITIONS OF FERTILITY ALTERATION IN A NEW THEMO-SENSITIVE MALE STERILE BARLEY

作　　者：杨静[1] 张自国[1] 曾汉来[1] 李玉珍[1] 王前和[1] 程鹏飞[1] 

机构地区：[1]华中农业大学农学系,武汉市东西湖农科所

出　　处：《华中农业大学学报》1994年第4期354-359,共6页Journal of Huazhong Agricultural University

摘　　要：生态核不育大麦９１１１－２－３（Ｈ．ｄｉｓｔｉｃｈｕｍ）在自然条件下具有育性转换特性，温度是诱导其育性转换的主导因子，在一定温度范围内低温诱导不育，高温诱导可育。抽穗前２８～１４ｄ是育性转换的温度敏感期，此时为大麦穗分化的药隔形成中期至四分体形成期。诱导育性转换的不育上限温度为１０℃，可育下限温度为１３℃。The fertility of males-sterile barley 9111-2-3 under different temperature and photoperiod conditions was studied in phytotron and by different sowing time.The results showed that male-sterile barley 9111-2-3 displayed fertility alteration in natural conditions ,and the alteration in fertility was mainly induced by temperature. The thermo-sensitive phase of male-sterile barley 9111-2-3 occurred 14～28 days before heading, which was the period from the middle of the anther diaphragm formation to the tetrad formation.During this period, low temperature pollen sterility and high temperature induced fertility. The critical sterile temperature was 10℃and the critical fertile temperature was 13℃.

关 键 词：生态核不育 大麦 育性转换 温度 

分 类 号：S512.301[农业科学—作物学]