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 a New 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。在泉州地区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: To accelerate the promotion and application of new rice varieties, this paper summarizes the characteristics of the parents of high-quality hybrid rice Maoyou 039 and its high-yield seed production techniques suitable for Quanzhou region based on field production practices.Through staggered sowing of Maoyou 039 parents and field observation of their agronomic traits, the results show that the female parent Maoxiang A features rice blast resistance and stable male sterility, yet exhibits reduced flowering quantity and weakened stigma vitality under high temperature conditions.The male parent Quanhui 039 is characterized by strong tillering ability, vigorous growth and abundant pollen supply.In Quanzhou area, sowing is conducted in mid-to-late June with heading occurring in mid-to-late September, and the sowing interval between female and male parents is about 15 days. Rational application of phosphorus and potassium fertilizers can enhance the stigma vitality and flowering performance of the female parent. Appropriate regulation of gibberellin dosage on male parents combined with artificial supplementary pollination can easily achieve high yield in hybrid rice seed production.

       

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