京科968等系列玉米品种“易制种”性状选育与高产高效制种关键技术研究
本文分析了京科968等系列玉米品种与易制种相关的农艺性状、典型制种高产田的产量及产量构成要素。结果显示,京科968等系列玉米品种具有良好的易制种特性,单位面积制种产量大幅高于先玉335,与郑单958相当或略高；按单位面积有效商品籽粒数计,京科968等系列玉米品种则较郑单958和先玉335具有明显优势,尤其是京科968品种更是如此。先进的育种指导思想和技术路线是易制种京科968等系列玉米品种选育成功的关键,集成和优化制种关键技术措施是实现高产高效制种和产业化推广应用的基础。
英文摘要:
Characteristics related to easy seed production of Jingke 968 et al , and their yield and yield components in typical seed high-yield plots were analyzed. It was showed that Jingke 968 et al possessed good traits for easy seed production, and their seed yield per unite area was as high as Zhengdan 958 and higher than Xianyu 335. Compared to Zhengdan 958 and Xianyu 335 there were obvious advantages in the total effective commodity grain number per unit area for Jingke 968 et al, especially for Jingke 968. Advancing breeding guidelines and technical routes were the key to the success for Jingke 968 et al in easy seed production, and integrated and optimized the key technical measures were the basis for high yield and high efficiency in seed production.
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