Abstract
The aim of this research was to select silage maize varieties suitable for planting in Henan province. A total of 20 silage maize hybrids were collected and used as test materials, and were evaluated in terms of dry matter yield, corn silage quality (protein, starch, acid detergent fiber, neutral detergent fiber, and relative feed value), stress resistance (lodging rate, lodging rate of corn stalks, and stem rot), and agronomic traits (plant height, ear height, and duration). The results showed that: 1) the dry matter yield of Yuqing 386, Yuqing 506, Beinongqingzhu 368, Yuqingyu No.3, Xinke 910, Yayu 04889, Xianyu 1658, Zhengqingzhu No.1, Jiuxin 631, Beinongqingzhu 3740, and Zhengqingzhu No.2 were higher than those of Yayuqingzhu 8 (the control variety). The grain yield of Xianyu 1658 and Jiuxin 631 was higher than that of the control variety Zhengdan 958. 2) There were significant differences in the quality indicators among the 20 varieties of maize (P < 0.05). We obtained two groups of maize through a cluster analysis of these quality indicators, of which the maize variety group I was a higher quality group. Among the maize variety group I, all grades of maize varieties were the top level or first-class, except for the maize variety Yongyou 1573. With a lower neutral detergent fiber (NDF) and acid detergent fiber (ADF) content, and a higher starch content, the value of maize variety group I for silage was relatively high. 3) Yuqingyu No.3, Yuqing 386, Ninghe 0709, Yuqing 506, Quchen 19, Yayu 04889, Dajingjiu 26, and Yongyou 1573 had weak lodging resistance. All the analyses showed that Beinongqingzhu 368, Xinke 910, Xianyu 1658, Zhengqingzhu No.1, Jiuxin 631, Beinongqingzhu 3740, and Zhengqingzhu No.2 were suitable for planting in the Henan Province, and had higher dry matter yield, higher quality silage, and a higher level of stress resistance.
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