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首页> 外文期刊>Journal of Maize Research and Development >Estimation of heterosis in yield and yield attributing traits in single cross hybrids of maize
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Estimation of heterosis in yield and yield attributing traits in single cross hybrids of maize

机译：玉米单交交杂种产量和单产特性的杂种优势估计

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A field experiment was conducted at National Maize Research Program, Rampur, Chitwan, Nepal during winter season from 6th October, 2015 to 5th March 2016 to estimate different heterosis on single cross maize hybrids . Thirteen maize hybrids were tested randomized complete block design with three replications. Hybrid namely RML-98/RL-105 gave the highest standard heterosis (57.5%) for grain yield over CP-666 followed by RML-4/NML-2 (32.6%), RML-95/RL-105 (29%) and RML-5/RL-105 (20.6%). The hybrid RML-98/RL-105 produced the highest standard heterosis (75.1%) for grain yield over Rajkumar followed by RML-4/NML- 2(50.2%), RML-95/RL-105(46.6%), RML-5/RL-105 and (35.7%). Mid and better parent heterosis were significantly higher for yield and yield attributes viz. ear length, ear diameter, no of kernel row per ear, no of kernel per row and test weight. The highest positive mid-parent heterosis for grain yield was found in RML-98/RL-105 followed by RML-5/RL-105, RML- 95/RL-105, and RML-4/NML-2. For the grain yield the better parent heterosis was the highest in RML-98/RL-105, followed by RML-5/RL-105, RML-95/RL-105, and RML-4/NML-2. These results suggested that maize production can be maximized by cultivating hybrids namely RML- 98/RL-105, RML-5/RL-105, RML-95/RL-105, and RML-4/NML-2 .
机译：在2015年10月6日至2016年3月5日的冬季，在尼泊尔奇旺的Rampur的国家玉米研究计划中进行了田间试验，以估计单杂交玉米杂交种的不同杂种优势。测试了13个玉米杂种，进行了3​​次重复的随机完整区组设计。杂种，即RML-98 / RL-105的最高杂种优势（57.5％）高于CP-666，其次是RML-4 / NML-2（32.6％），RML-95 / RL-105（29％）和RML-5 / RL-105（20.6％）。杂种RML-98 / RL-105产生的最高标准杂种优势（75.1％）比Rajkumar更高，其次是RML-4 / NML-2（50.2％），RML-95 / RL-105（46.6％），RML -5 / RL-105和（35.7％）。中和更好的亲本杂种优势明显高于产量和产量属性。耳朵长度，耳朵直径，每只耳朵没有谷粒行，每行没有谷粒和测试重量。 RML-98 / RL-105，RML-5 / RL-105，RML-95 / RL-105和RML-4 / NML-2发现了最高的正中亲杂种优势。就谷物产量而言，较好的亲本杂种优势在RML-98 / RL-105中最高，其次是RML-5 / RL-105，RML-95 / RL-105和RML-4 / NML-2。这些结果表明，通过培养杂种，即RML-98 / RL-105，RML-5 / RL-105，RML-95 / RL-105和RML-4 / NML-2，可以最大化玉米的产量。

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