Shojaei Seyed Habib, Mostafavi Khodadad, Khosroshahli Mahmoud, Reza Bihamta Mohammad, Ramshini Hossein
Department of Agronomy and Plant Breeding Science and Research Branch Islamic Azad University Tehran Iran.
Department of Agronomy and Plant Breeding Karaj Branch Islamic Azad university Karaj Iran.
Food Sci Nutr. 2020 Aug 21;8(10):5340-5351. doi: 10.1002/fsn3.1826. eCollection 2020 Oct.
In order to investigate the interaction of genotype × trait and relationships among agronomic traits on 12 maize hybrids, an experiment was conducted in a randomized complete block design (RCBD) with three replicates in four regions of Karaj, Birjand, Shiraz, and Arak. Results of analysis of variance indicated that most of the genotypes were significantly different in terms of agronomic traits. Mean comparison by Duncan's method showed that KSC705 genotype was more favorable than other genotypes in all studied regions. SC604 genotype in Birjand and Karaj regions and KSC707 genotype in Shiraz region have higher rank than other genotypes. Correlation analysis was used to investigate the relationships between traits. In most of the studied regions, traits of number of grains in row and number of rows per ear were positively and significantly correlated with grain width and grain weight with grain yield. Graphical analysis was used to further investigate. Genotypes-trait interaction graph explained 59.27%, 61.22%, 59.17%, and 61.95% of total variance in Karaj, Birjand, Shiraz, and Arak, respectively. Based on the multivariate graph, KSC705, KSC706, and SC647 genotypes were identified as superior genotypes in all studied regions and KSC400 genotype did not show much response to change in traits. Correlation between grain width and number of rows in ear, plant height and grain length, one thousand grain weight and grain thickness, and ear diameter with number of grains in row was positive and significant. The results of classification graph of genotypes also divided the cultivars in to three groups as follows: KSC703, KSC400, and KSC706 genotypes in the first group; DC370, SC604, and SC301 in the second group; and KSC260, KSC704, KSC707, and SC301 in the third group.
为了研究12个玉米杂交种的基因型×性状相互作用以及农艺性状之间的关系，在卡拉季、比尔詹德、设拉子和阿拉克四个地区进行了一项随机完全区组设计（RCBD）试验，重复三次。方差分析结果表明，大多数基因型在农艺性状方面存在显著差异。采用邓肯法进行均值比较表明，在所有研究地区，KSC705基因型比其他基因型更具优势。比尔詹德和卡拉季地区的SC604基因型以及设拉子地区的KSC707基因型比其他基因型排名更高。采用相关分析研究性状之间的关系。在大多数研究地区，每行粒数和每穗行数性状与粒宽、粒重和籽粒产量呈显著正相关。采用图形分析进行进一步研究。基因型-性状相互作用图分别解释了卡拉季、比尔詹德、设拉子和阿拉克地区总方差的59.27%、61.22%、59.17%和61.95%。基于多变量图，KSC705、KSC706和SC647基因型被确定为所有研究地区的优良基因型，而KSC400基因型对性状变化的响应不大。粒宽与穗行数、株高与粒长、千粒重与粒厚以及穗直径与每行粒数之间的相关性呈显著正相关。基因型分类图的结果也将品种分为三组，如下所示：第一组为KSC703、KSC400和KSC706基因型；第二组为DC370、SC604和SC301；第三组为KSC260、KSC704、KSC707和SC301。
