论文部分内容阅读
将新选育的水稻核不育材料19份加上对照安湘S在沙县（26°24’N），海拔为120m、320m和520m三个试验点插植。观察花粉育性变化，从而选育出较优于对照安湘S或跟安湘S相近的核不育材料。以便为在福建地区推广应用提供部分依据。结果表明：（1）SE21、SE126和SC184不育下限温度低，不育性对低温反应钝感，有33—60d的稳定不育期，不育度高，均能在三个海拔地区制种。（2）SE46、SE69、SE153、SE47、SE152、I13－20、I13－6－2等需4d以上连续低于23—24℃的低温才能使不育性波动，在海拔300m以下制种较为安全。（3）SL7、I3－13、SE93、SE43、SE166、I3－22与安湘S相类似，在海拔200m以下制种较可靠。同时提出不育材料在沙县制种的适宜时期。
Nineteen newly-selected rice nuclear sterility materials were added to the control Xiangxiang S in Shaxian County (26 ° 24’N), three plots of 120m, 320m and 520m above sea level. Observation of pollen fertility changes, which bred better than the control Xiang An S or Anxiang S similar nuclear sterile materials. In order to promote the application in Fujian area to provide partial basis. The results showed that: (1) SE21, SE126 and SC184 had a lower minimum temperature of male sterility, insensitive to insensitivity to low temperature, stable sterility for 33-60 days, high sterility and seed production in three altitudes . (2) Sterility should not fluctuate until the temperature below 4-24 ℃, which is lower than 23-24 ℃ continuously for SE46, SE69, SE153, SE47, SE152, I13-20, I13-6-2, etc. It is safer to seed below 300m . (3) Similar to Anxiang S, SL7, I3-13, SE93, SE43, SE166 and I3-22 are more reliable in seed production below 200m above sea level. At the same time put forward sterile materials in Shaxian seeding the appropriate period.