例句與用法

1. Field testing method of hybrid maize production
   雜交玉米制種田間檢驗(yàn)方法
2. Measure to keep florescence meet in maize seed production land
   保持玉米制種田花期相遇的幾點(diǎn)措施
3. Research on male parent pollen and vigour of maize seed production
   玉米制種田父本花粉量及活力的研究
4. Abstract : the main characters and seed set of bc1 ， bc2 ， bc1f2 from ms line back - crossing with the pollen of hybrid rice were studied . the appearance of a large number of self fertile plants in ms line was analyzed . the effect of introgression of restoring genes on ms line purity and hybrid yield in indica and japonica rice was discussed . it was pointed out that “ iso - cytoplasm restorer line ” was seriously reducing the purity of ms line and that hybrid rice was unsuitable for isolation zone in the seed production fields
   文摘:研究了雜交稻花粉對(duì)母本不育系回交后代群體bc1 、 bc2 、 bc1f2的主要農(nóng)藝性狀和育性表現(xiàn)，分析了不育系中出現(xiàn)大量自交結(jié)實(shí)株的原因，討論了恢復(fù)基因滲入對(duì)秈、粳不育系純度和雜交稻產(chǎn)量的影響，指出“同質(zhì)恢”對(duì)降低不育系純度的嚴(yán)重性和雜交稻作制種田隔離區(qū)的不合理性。