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杂交种为什么具有较高的生产率,较强的生活力和经济性状的一致性,前人曾进行过多方面的探讨,迄今未得到确切解释。尤其以高粱为试材的研究报告,在国内还未见过报导。但高粱的三系及其组成的杂交种,确实由于授精过程一粒花粉差异的原发机制,导致二者在生理代谢过程中发生变化,最后表现在经济产量上,亲本和杂交种表现了较大的差异。因此,为了探讨产生杂种优势的原因,我们近年来结合育种工作,开展了对高粱的后发生理指标的研究,企图通过杂交种及其相应亲本的生理特性和经济性状的测定,探讨高粱杂种优势的生理基础。现将初步研究结果,报告如下。
Why hybrids have high productivity, strong vitality and consistency of economic traits, many people have conducted many discussions, so far not been given an exact explanation. In particular, sorghum as a test material research report, has not been reported in the country. However, the three lines of sorghum and its hybrids did indeed change due to the primary mechanism of pollen difference during the fertilization process, leading to changes in their physiological metabolism. Finally, in terms of economic yield, the parents and hybrids performed more Big difference. Therefore, in order to explore the reasons for heterosis, in recent years we combined with breeding work to carry out studies on the post-emergence physiological indicators of sorghum in an attempt to explore the physiological characteristics and economic traits of hybrids and their corresponding parents to explore sorghum heterosis The physiological basis. Now the preliminary findings, the report is as follows.