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- Title
玉米亲本自交系及杂交种机械粒收质量相关指标分析.
- Authors
魏良明; 叶飞宇; 张前进; 张新; 王振华; 庞芸芸; 马晨晨; 金松灿; 鲁晓民
- Abstract
With maize parental inbred lines and hybrid varieties as experimental materials, from 2019 to 2020, the breaking strength, length and thickness of the aboveground 3th, 4th and 5th internodes from the last, the moisture content, breakage rate, compressive capacity and dehydration rate of grains at harvest time were analyzed, and the maize materials with strong stem strength and good mechanical grain harvest quality were screened to lay a foundation for the cultivation of new varieties suitable for mechanical grain harvest. The results showed that the stem breaking strength of inbred line E8501 and hybrid Zhengdan 6122 was higher, and that of inbred lines Zheng 58, ZC1456 and hybrid Zhengdan 958 was lower. The internodes of inbred line Zheng 682 and hybrid Xianyu 335 were longer, and the internodes of inbred line Zheng 588 and hybrid Zhengdan 1002 were shorter. The internodes of inbred lines Zheng P6, PH6WC and hybrid DK517 were thicker, while the internodes of inbred line Zheng 682 and hybrid Zhengdan 6098 were finer. The results of cluster analysis showed that the parental inbred lines E8501, Zheng 7541, Zheng H71, Zheng V89M, Zheng D58M, HCL1645, PH4CV and their hybrids Zhengdan 6386, Zhengdan6122, DK517, Zhengdan 6095, Zhengdan 6098, Zhengdan 1868 and Zhengdan 1002 had stronger stem strength. The moisture content of hybrid Zhengdan 958 was higher, while Zhengdan 6122 was lower. The breakage rates of inbred line Zheng H71 and hybrids Zhengdan 958 and Zhengdan 1868 were higher, while the breakage rates of inbred line PH4CV and hybrid DK517 were lower. The compressive capacity of inbred line PH4CV and hybrid Zhengdan 6122 was higher, while that of inbred line ZhengH71 and hybrid Zhengdan 958 was lower. When grain was harvested, moisture content≤26. 87% could meet the national standard of mechanical grain harvest with breakage rate ≤5%. On the basis of the above 14 maize materials with strong lodging resistance, finally, parental inbred lines E8501, Zheng 7541, Zheng H71, Zheng V89M, Zheng D58M, HCL1645 and PH4CV and hybrids DK517, Zhengdan 6122, Zhengdan 6386 and Zhengdan 6098 were selected as materials with strong lodging resistance and good mechanical grain harvest quality (moisture content≤26. 87%, and breakage rate≤5%).
- Subjects
GRAIN harvesting; HARVESTING time; CLUSTER analysis (Statistics); MOISTURE; DEHYDRATION; CORN
- Publication
Journal of Henan Agricultural Sciences, 2023, Vol 52, Issue 4, p31
- ISSN
1004-3268
- Publication type
Article
- DOI
10.15933/j.cnki.1004⁃3268.2023.04.004