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玉米新品种金玉2208的选育实践与思考

Breeding Practice and Thinking of a New Maize Variety Jinyu 2208

  • 摘要: 针对贵州西部低温寡照、春旱严重、后期阴雨连绵和土壤瘠薄的生态环境,开展早熟、耐瘠、耐低温阴雨、抗病性好且籽粒脱水快的玉米新种质创制与杂交种选育。利用“两群双向选择组配”理论,以QB 1018(母本)和QB 2232(父本)组配多抗、高产的玉米新品种金玉2208(黔审玉20200033);适合贵州省毕节市和六盘水市海拔1 400~2 200 m中上等肥力土壤的玉米产区种植,该品种能在北方制种,有效解决热带种质制种温光反应问题。

     

    Abstract: Aiming at the ecological environment of low temperature and little sunshine, severe spring drought, continuous rain in the later stage and poor soil in western Guizhou, the creation and hybrid breeding of new maize germplasms with early maturity, barren tolerance, low temperature and rain tolerance, good disease resistance and fast grain dehydration were carried out. Using the theory of "two-way selection and combination of two groups", QB 1018(female parent) and QB 2232(male parent) were used to combine a new maize variety Jinyu 2208(Qian Shenyu 20200033) with multi-resistance and high yield which was suitable for Bijie City, and Liupanshui City in Guizhou Province where planted in maize production areas with an altitude of 1 400—2 200 meters in medium and upper fertile soils. This variety could be used for seed production in the north and effectively solves temperature and light reaction problems of tropical germplasm seed production.

     

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