摘要
[目的]为提高桃的坐果率提供理论基础。[方法]通过用4、-3、-6℃的低温对5个品种的桃花花粉进行分时段处理,研究了低温对它们的花粉生活力和花粉管生长情况的影响。[结果]在-6、-3、4℃下,萌发率最高的是83-1,其次是武井早生,萌发率最低的是中油五号。在-6℃下处理7 h,各品种的萌发率大小依次为：双喜红〉83-1〉武井早生〉中油五号〉中油七号。双喜红、武井早生在观察的2 h中花粉管生长缓慢,中油五号、83-1在观察的1～2 h间花粉管生长缓慢,但在2～3 h间有一段快速生长的时间。结果表明,中油七号的花粉最不耐低温,武井早生和83-1都具有较强的耐低温能力。[结论]低温对桃花花粉萌发和花粉管生长影响十分明显,品种间差异很大。
[Objective] The purpose of the research was to supply theoretical basis for enhancing the fruit-setting rate of peach.[Method] The influence of low temperature on the pollen viability of peach flower and growth status of their pollen tubes was researched through treating pollens of 5 peach varieties by low temperatures at 4,-3 and-6 ℃ and dividing periods.[Result] At-6,-3 and 4 ℃,the germination rate of 83-1 was highest,that of Wujingzaosheng was secondary and that of Zhongyou 5 was lowest.In the treatment at-6 ℃ for 7 h,the germination rates of all the varieties were as follows sequencely： Shuangxihong〉83-1〉Wujingzaosheng〉Zhongyou 5〉Zhongyou 7.In the 2 h of observation duration,the pollen tubes of Shuangxihong and Wujingzaosheng grew slowly,that of Zhongyou 5 and 83-1 grew slowly in the observation duration from the 1st hour to the 2nd hour,but they had a period of rapid growth in the duration from the 2nd hour to the 3rd hour.The results indicated that the pollen of Zhongyou 7 was least resistant to low temperature and Wujingzaosheng and 83-1 had stronger resistance to low temperature.[Conclusion] The influence of low temperature on the pollen germination of peach flower and growth of their pollen tubes was very obvious and there was very great difference among varieties.
出处
《安徽农业科学》
CAS
北大核心
2009年第11期4955-4956,5146,共3页
Journal of Anhui Agricultural Sciences
关键词
桃树
花粉活力
萌发率
低温
Peach
Pollen viability
Germination rate
Low temperature
