高产广适国审小麦新品种鲁原118产量相关参数分析

Analysis on Yield Related Parameters of a New National Approved Wheat Cultivar Luyuan 118 with High Yield and Wide Adaptability

利用2016—2017年国家小麦良种联合攻关黄淮冬麦区北片区域试验、2017—2018年区域试验和生产试验统计汇总的数据,通过分析产量、产量变异系数、高稳系数、适应性参数、产量构成因素及其对产量影响的通径系数,对小麦品种鲁原118进行丰产性、稳产性、适应性以及产量构成因素对产量作用大小进行评价。结果表明,鲁原118比对照品种济麦22增产,差异达极显著水平,具有良好的丰产性;变异系数(CV)和高稳系数值(HSC_i)分析结果表明鲁原118具备良好的稳产性;增产点率和品种离优度值(P_(i))分析结果显示鲁原118在不同生态区具有广泛的适应性。可见鲁原118是一个丰产性好、稳产性强、适应性广的优良品种。通径分析结果表明,产量构成因素中对产量直接作用大小依次为:有效穗数>穗粒数>千粒重。在生产中要协调好三因素之间的关系,在适宜的有效穗数基础上,争粒数、促粒重,最大程度发挥该品种的产量潜力。

Based on the analysis of yield,yield coefficient variations,high stability coefficient,adaptability parameters,yield components and their path coefficients to yield,the high yield performance,stable yield property,adaptability and effects of yield components on yield were evaluated with the wheat cultivar Luyuan 118 as material.The data was obtained from 2016-2017 regional tests of the National Joint Key Research on Elite Wheat Varieties and 2017-2018 regional tests and production tests in the Huanghe-Huaihe winter wheat region.The results were as follows.The yield of Luyuan 118 was significantly higher than that of Jimai 22 showing better production performance.The analysis of coefficient variation and high stability coefficient showed that Luyuan 118 had better stability of yield.Luyuan 118 showed universal adaptability in different ecological regions through the analysis of proportion of production increasing points and P_(i).It could be concluded that Luyuan 118 was a good cultivar with high and stable yield and wide adaptability.Path analysis showed that the direct effects of yield components on yield were as effective spike number>kernel number per spike>thousand-kernel weight.The relationship among the three factors should be well coordinated in production.Under the premise of suitable effective spike number,the yield potential of this cultivar could be maximized by increasing kernel number per spike and kernel weight.