黄淮麦区小麦品种的性状特点及改良途径

来源 :河南农业科学 | 被引量 : 0次 | 上传用户:radeon0118
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利用1980-1992年黄淮南片及河南省水地小麦品种区试资料,统计分析了1980年以来该区育成品种的产量、产量三要素、抗性等性状的累计频率,以及“六五”期间、“七五”期间(以下简称“六五”、“七五”)该区育成品种的特点和应用情况。结果表明:育成的小麦新品种的生态型以半冬性(约占42%)和弱春性(约25%)为主。“七五”期间比“六五”期间,半冬性品种相对下降了6%;弱春性和春性品种则上升了17%和4%;株高降低约5~10cm;产量潜力明显提高,亩有效穗增多,穗粒数减少;品种抗病性提高;而品种的遗传基础趋于狭窄。提出了大面积生产条件下(亩产350~450公斤)对丰产、稳产、广泛适应性品种性状的要求和今后的育种目标。 Based on the regional test data of Huanghuainan South Tablets from 1980 to 1992 and water land wheat varieties of Henan Province, the cumulative frequency of yield, yield, resistance and other characters of the bred varieties in this area since 1980 was statistically analyzed. During the “Seventh Five-Year Plan” (hereinafter referred to as the “Sixth Five-Year Plan” and “Seventh Five-Year Plan”), the characteristics and application of the bred varieties in this area. The results showed that the ecotypes of bred new wheat varieties were mainly semi-winter (about 42%) and weak spring (about 25%). During the “Seventh Five-Year Plan” period, the semi-winter varieties decreased 6% compared with the “Sixth Five-Year Plan”; the weaker spring and spring varieties increased 17% and 4%; the plant height decreased about 5 ~ 10cm; , The number of effective panicles increased and the number of grains per panicle decreased; the disease resistance of varieties increased; while the genetic basis of varieties tended to be narrow. Proposed large-scale production conditions (mu produce 350 ~ 450 kg) of high yield, stable yield, a wide range of adaptability traits and future breeding objectives.
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