优质杂交稻茂优039亲本的特征特性及高产制种技术

    Parent Characteristics and High-yielding Seed Production Techniques of the High-quality Hybrid Rice Variety Maoyou 039

    • 摘要: 为加快新品种的推广应用,结合生产实践,总结了优质杂交水稻新品种茂优039亲本的特征特性及其在泉州地区的高产制种技术。对茂优039的亲本进行分期播种,观察其特征特性。结果表明:母本茂香A抗稻瘟病、不育性稳定,但在高温下开花量减少、柱头活力降低;父本泉恢039分蘖力强、长势繁茂、花粉量足。母本茂香A在泉州地区6月下旬至7月上旬播种,父本泉恢039在6月中下旬播种,9月中下旬抽穗,父母本播差期15 d左右;增施磷钾肥,增强母本柱头活力、促进开花;控制父本“九二〇”的施用量,人工辅助授粉;制种易获得高产。

       

      Abstract: In order to accelerate the promotion and application of new rice varieties, the characteristics of the parents of new high-quality hybrid rice variety Maoyou 039 and its high-yielding seed production techniques suitable for Quanzhou region were summarized based on field production practice. The parents of Maoyou 039 were sowed by stages to observe their characteristics. The results showed that the female parent Maoxiang A featured rice blast resistance and stable male sterility, yet exhibited reduced flowering quantity and weakened stigma vitality under high temperature conditions. The male parent Quanhui 039 was characterized by strong tillering ability, vigorous growth and abundant pollen supply. The female parent Maoxiang A was sown from late June to early July in Quanzhou area, and the male parent Quanhui 039 was sown in the middle and late June and earing heading in the middle and late September, and the sowing interval between female and male parents was about 15 days. Rational application of phosphorus and potassium fertilizers could enhance the stigma vitality and flowering performance of the female parent. Appropriate regulation of gibberellin dosage on the male parents combined with artificial supplementary pollination could easily achieve the high yield in the seed production of hybrid rice.

       

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