Performance and stability of yield in response to plant density,year and location in maize hybrids of Northwest China
Performance and stability of yield in response to plant density,year and location in maize hybrids of Northwest作者机构：Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest RegionMinistry of Agriculture and Rural AffairsCollege of AgronomyNorthwest A&F UniversityYanglingShaanxi 712100China Maize Engineering Technology Research Centre of Shaanxi ProvinceNorthwest A&F UniversityYangling Shaanxi 712100China Cereal Crop Research Institute(CCRI)NowsheraKyber Pakhtunkhwa 25000Pakistan
出 版 物：《Technology in Agronomy》 (农学技术（英文）)
年 卷 期：2022年第2卷第1期
页 面：18-24页
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
基 金：supported by the China Agriculture Research System(CARS-02),Key Research and Development Program of Shaanxi Province(2021LLRH-07) the Seed Industry Innovation of Yangling(Ylzy-ym-01)
主 题：breeding Northwest planted
摘 要：Identifying desirable genotypes with the best performance in diverse environments is a perpetual aim of plant breeding,and the interaction between genotype and environment(G×E)always plays a key *** study was conducted to elucidate the genetic behaviour of different hybrid combinations at various densities in diverse *** to a line×tester design,32 hybrid combinations were obtained from 16 inbred individuals crossed with two testers and planted at three locations at three density levels(45,000,67,500 and 90,000 plants ha-1)during ***(G),environment(E)and the interaction of genotype and environment(G×E)significantly affected grain yield at different *** planting density enhanced grain yield and improved the efficiency of germplasm screening,where the effect of location on grain yield at different densities was larger than that of year and the GCA was larger than the ***,four inbred lines(KB102,KB081,KA105,and KB106)with a high GCA,environmental adaptability,and several combinations using them as parents have been approved in ShannXi Province and National of *** conclusion,the evaluation of combining ability at multiple densities and locations can effectively screen inbred lines and improve breeding efficiency.
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