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利用灰色关联的分析方法,对恩施州2006年玉米区试A、B、C组参试的34个新组合及相应对照分组进行综合评价。结果表明:在鄂西南玉米种植区玉米杂交种产量与主要农艺性状的关联度大小排序为:生育期、穗长、抗倒性、株高、行粒数、穗位高、出籽率、千粒重、穗行数。与产量密切相关的性状是品种的生育期、穗长、抗倒性、株高、行粒数等。在选育玉米杂交种时,在保证适当的生育期和株高的前提下,要注重抗倒性、出籽率、长穗和多粒性状的选择,同时不要忽视千粒重和穗行数的选择。
Using the gray relational analysis method, 34 new combinations and their corresponding control groups of the A, B and C tests of Enshi Prefecture 2006 corn district were comprehensively evaluated. The results showed that the correlations between the yield of maize hybrids and the main agronomic traits in the corn planting areas in Southwest Hubei were as follows: growth period, ear length, lodging resistance, plant height, grain number per plant, ear height, seed yield, , Ear number of rows. Closely linked with the yield traits of the varieties of the growth period, spike length, lodging resistance, plant height, line grain number. In the selection of maize hybrids, we should pay attention to the choice of lodging resistance, seed yield, long spike and multi-grain traits under the premise of ensuring proper growth period and plant height, while not neglecting the selection of 1000-grain weight and ear number .