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在抗病杂交选种程序中,凡能缩短代与代间期限的一切措施,都有利于新品种的育成。Wiggans 和 Frey 曾用加长光照的方法,缩短了6个燕麦品种的成熟期。在沈阳的环境条件下,生长在温室内的春小麦,如每天予以25W/平方尺强度的光照4至6小时以上时,在冬季10月至3月同,平均约需70至75天才能成熟,其中自抽穗至成熟约在30天左右。如果还能缩短成熟期的天数,或使尚未成熟的籽粒提前萌芽和种植,则尚可缩短开花后的成熟天数,对于加速选种程序是有利的。前人在破除种子休眠期促使籽粒提前
In the anti-disease hybridization selection program, where all measures can shorten the generation and intergenerational period, are conducive to the breeding of new varieties. Wiggans and Frey used longer light to shorten the maturity of six oat varieties. Under the environmental conditions of Shenyang, spring wheat growing in a greenhouse, with daily light intensity of 25 W / square foot for more than 4 to 6 hours, will take about 70 to 75 days on average to mature in October to March in winter, Among them, from heading to maturity about 30 days. If you can shorten the maturity of the number of days, or immature grains in advance of budding and planting, you can shorten the number of mature days after flowering, for accelerating the selection process is advantageous. Former people in breaking the seed dormancy to promote grain advance