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首页> 外文期刊>Journal of Plant Breeding and Crop Science >Performances of selected tropical white maize single-cross hybrids for yield and yield attributing traits
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Performances of selected tropical white maize single-cross hybrids for yield and yield attributing traits

机译：精选热带白玉米单交杂交种表现出的产量和产量特性

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In Ghana, the production of hybrid maize is at its infant stage, occupying only about 3% of the area devoted for maize production. Therefore, the yields of this crop are low, 1.7 t ha-1 due to the use of open pollinated varieties (OPVs), shortage of high yielding varieties, biotic and abiotic stresses. Thus, the present study was designed to identify superior crosses based on their agronomic performance. Thirty-two hybrids and three checks were evaluated using a 5 x 7 alpha lattice design replicated twice at the University of Ghana, WACCI research farm during 2015/-16 offseason using drip irrigation. Analysis of variance revealed that genotype mean squares were highly significant (P < 0.001) for days to 50% anthesis and silking, plant and ear height, plant aspect, ear length, number of kernel rows ear-1, number of kernels row-1 and yield. Similarly, mean squares of genotypes were significant (p ≤ 0.05) for ear rots, anthesis-silking interval, and husk cover. Based on the mean grain yield performance, six promising single crosses, L8 x T2, L1 x T2, L16 x T1, L16 x T2? L4 x T2,? L9 x T1 having grain yield of 6377, 6011, 5848, 5222, 5150 and 5135 kg ha-1, respectively were identified as possible candidates for release after establishing the stability of their performance in multi-locational trials and should be promoted for adoption and commercialization in the country.
机译：在加纳，杂交玉米的生产尚处于婴儿期，仅占专门用于玉米生产的面积的3％。因此，由于使用开放的授粉品种（OPV），缺乏高产品种，生物和非生物胁迫，该作物的单产低至1.7 t ha-1。因此，本研究旨在根据其农艺表现来鉴定优良杂交。在2015 / -16休赛期使用滴灌技术，在加纳大学WACCI研究农场两次重复使用5 x 7α晶格设计，评估了32个杂种和3个检查。方差分析表明，基因型均方根在50％的花期和丝化，植株和穗高，植株长宽，穗长，穗粒1排，穗粒1排的数天中具有很高的显着性（P <0.001）。和产量。同样，基因型的均方根在耳腐，花期间隔和果皮覆盖方面也很显着（p≤0.05）。根据平均谷物产量表现，六个有希望的单次杂交是L8 x T2，L1 x T2，L16 x T1，L16 x T2？ L4 x T2 ，？在多地点试验中确定其表现的稳定性后，分别将谷物产量分别为6377、6011、5848、5222、5150和5135 kg ha-1的L9 x T1确定为可能的释放对象，应促进采用和该国的商业化。

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