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上溪在浙江临安西部,位于北纬30°10′,东经118°57′,海拔在1000公尺左右。在上溪夏播条件下,凡属春性型品种及其杂交组合,基本上都能正常抽穗、结实;凡属冬性型品种及其杂交组合,基本上都不能通过春化阶段。弱冬性品种及其杂交组合的生长情况,表现较为复杂:有的能正常抽穗、结实;有的不能通过春化阶段或光照阶段;有的在同品种或同一组合中仅有个别植株能抽穗、结实,而其余的植株又不能通过春化阶段或光照阶段。凡亲本一方为春性型,另一方为弱冬性型的杂交组合,仅少数例外,其余均能正常抽穗、结实。 15个杂交组合在异地加代中F_2与F_3间几个主要性状的相关系数(r):株高为+0.521~△,穗长为+0.510~△,小穗数为-0.230,每穗粒数为+0.182.抽穗期为+0.106,每株有效穗数为-0.100。(△表示10％的差异显著平准)。
Shangxi is located in the west of Lin’an in Zhejiang Province, at latitude 30 ° 10 ’north, longitude 118 ° 57’ and elevation of 1000 meters. Under the conditions of Shangxi summer sowing, all the spring sexual varieties and their hybrid combinations basically can be normally heading and sturdy. All winter-type varieties and their hybrid combinations basically can not pass the vernalization stage. Weak winter varieties and their hybrid combinations of growth, the performance is more complicated: Some can be normal heading, strong; some can not pass the vernalization stage or light stage; and some in the same variety or the same combination of only a few plants can be heading , Strong, and the rest of the plants can not pass the vernalization stage or light stage. Where one of the parents is spring type, the other is weak winter type hybrid combinations, with only a few exceptions, the rest can be normal heading, strong. The correlation coefficients (r) of several major traits between F_2 and F_3 in the offspring of 15 hybrid combinations were as follows: the plant height was + 0.521 ~ △, the spike length was + 0.510 ~ △, the number of spikelets was -0.230, the number of grains per panicle +0.182. The heading date was +0.106, the effective panicle per plant was -0.100. (△ indicates a significant 10% difference).