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采用主成分分析法对21份杂交组合进行了综合分析,筛选出9份优良杂交组合,与对照相比,筛选到的9份优良组合结果如下:S1-18,S1-4,S1-6,S1-12,S1-13,S1-14,S1-8,S1-19,S1-20平均生育期为106 d左右,与对照(CK)相近;光合特性的Pn、Gs、Ci、Tr较CK分别提高了13.92%、16.67%、8.86%、0.92%;百粒质量、穗粒数、出籽率、单株产量分别较对照(CK)提高了5.56%、0.71%、0.20个百分点、9.76%,其中尤以S1-8、S1-12的综合性状好,如生育期、株高、穗位高、穗上叶片数、收获时籽粒含水量、收获时苞叶含水量。茎秆节间穿刺强度、茎秆节间折断力以及苞叶数都与CK表现相一致,而产量和光合特性都优于CK,这两个组合在育种方面具有利用价值。
The results of principal component analysis showed that there were 9 excellent hybrid combinations in 21 hybrid combinations. Compared with the control, 9 excellent combinations were screened as follows: S1-18, S1-4, S1-6, The average growth period of S1-12, S1-13, S1-14, S1-8, S1-19 and S1-20 was about 106 days, which was similar to that of CK. The photosynthetic characteristics of Pn, Gs, Ci, Respectively, increased by 13.92%, 16.67%, 8.86% and 0.92% respectively. The grain quality, grain number per spike, seed yield and yield per plant increased 5.56%, 0.71%, 0.20% and 9.76% , Especially S1-8, S1-12 good overall traits, such as growth period, plant height, ear height, number of leaves on the ear, grain moisture at harvest, husk water content at harvest. The internode puncture strength, internode breakage force and number of husk were consistent with the CK performance, and the yield and photosynthetic characteristics were superior to CK, these two combinations have the value of utilization in breeding.