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在开花期完全摘除穗一侧的小穗(处理穗),以测试新老春小麦品种对源库调控的不同反应,并提出了穗的生产潜力(处理穗的两倍产量)和其余一半穗的潜在蛋白质含量的概念。在系统选择中,现代品种的潜在产量和实际产量的改进是由于提高了茎叶重和叶面积持续期(L_(ado)),特别是在不利的灌浆环境条件下,叶面积持续期与实际籽粒产量的比率就会提高。已经确定,在新品种中,潜在的和实际的蛋白质含量有一致降低的倾向,而每株蛋白质总量则有增加的趋势。在老品种中,根对植株总呼吸作用的贡献较大。尽管产量不断改良,但维持呼吸作用与总呼吸作用的比率,以及在整个生育期中以产量为基础的呼吸损失却保持不变。在老品种中,以籽粒氮为基础的真呼吸碳损失(总呼吸减维持呼吸)较少,在其他品种之间没有一致的差异。
Spikelets (spikelets) on the spikelet side were completely removed at flowering stage to test the different responses of the old and new spring wheat varieties to regulation of the source sinks and to propose the potential for spike production (doubling the yield of spike) and the remaining half The concept of potential protein content. In the system selection, the potential yield and actual yield of modern cultivars were improved due to increased stem-leaf weight and leaf area duration (L_ (ado)), especially under unfavorable filling conditions, The rate of grain yield will increase. It has been determined that the potential and actual protein content tends to decrease consistently with the new variety, while the total protein content per plant tends to increase. In older varieties, the root contributes more to the total respiration of the plant. Despite the continuous improvement in output, the ratio of respiration to total respiration and the output-based respiration loss throughout the reproductive period have remained constant. In older breeds, the loss of true respiration carbon (total respiration less respiration) based on grain nitrogen was less, and there was no consistent difference among the other breeds.