南疆引种果蔬玉米的性状表现

Research on Characters of Fruit Maize Introduced in South Xinjiang

对8个果蔬玉米品种进行了同一密度的随机区组的引种试验。结果表明,果蔬玉米品种的生育期长短的差异主要表现在生育前期,其次是后期,中期差异不大或无差异;主茎叶片数和株高的生长符合作物生长的"S"形生长模式,叶片日增长高峰均在大喇叭口期,主茎日增长高峰均在孕穗期;株高与主茎叶片数、株高日增长量呈正相关;单株穗数多,果穗小,穗粒数少,千粒重降低,但穗数的增加可以补偿穗粒数少及千粒重降低所带来的损失。美珍208、甜脆蜜、华珍等品种比较适宜新疆南疆种植。

By same density and random range of eight fruit maize varieties introduced in South Xinjiang,the experiment showed that the diversity of bearing period was in the prophase, and then anaphase, unconspicuous or unvaried in the metaphase. The growth of caulis leaves number and stem followed ＂S＂ curve,the day increase peak of caulis leaves at big bell-mouthed stage and the maximal growth rate of stem at pregnant stage. The height of stem was positive relevant relationship with the number of caulis leaves and the day increase of stern. As the number of fruit increased, the size became small, the number of grains decreased and weight of 1000 grains reduced. However, the increase of fruit number could offset the yield loss caused by decreased fruit number and weight of 1000 grains. The varities, Mizhen 208, Tiancuimi and Huazhen, are better suitable for South Xinjiang.