父母本不同播差期对陆两优267制种产量影响的研究

为了探明父母本不同播差期对陆两优267制种产量的影响,2009年,在娄底市娄星区早园村进行了试验。母本播种期不变,父本采用5个不同的播种期。结果表明,母本5月27日播种,父本5月14日播种,父母本播差期13d的,花期相遇良好,制种产量最高,达到262．83kg／667m^2。父本5月11日播种,父母本播差期16d的,花期基本相遇,制种产量次之,为207．35kg／667m^2。其余3个处理,花期相遇状况较差,制种产量低。

Effects of Different Sowing Gap Stages between Male and Female Parents on Seed Production Yield of Luliangyou 267

In order to find out the effects of different sowinggap stages between male and female parents on seed production yield of Luliangyou 267, the field experiments were conducted in Zaoyuan County of Louxing District of Loudi City in 2009. In the experiments, the sowing periods of female parent were the same, hut male parent took five different sowing periods. The results showed that when female parent sowing at 27th May and male parent sowing at 14th May, which different sowing gap stage between male and female parents was 13 days, the synchronization of male and female parents' flowering stages was great and the seed production yield was the highest that reached 3 942.45 kg/hm~2; when female parent sowing at 27th May and male parent sowing at 1 lth May, which different sowing gap stage between male and female parents was 16 days, the synchronization of male and female parents flowering stages was normal and the seed production yield was worse than that of the first treatment, which was 3 110.25 kg/hn~2; the synchronizations of male and female parents' flowering stages in others three treatments were worse and the yield was low.