论文部分内容阅读
植物种质的保存,是世界遗传基质在育种计划中的实际利用。长期保存种子会发生不良的老化过程。这种变老的过程,不仅使种子丧失发芽率,而且使仍有生活力的种子长出的幼苗发育退化。由此,不难推测,它对个体发育反有影响。查明其影响范围,具有很大的实际意义。因此,在育种工作中,常有这种情况,即当在育种圃播种不同年代收获,受到不同程度老化的种子时,可对这些不同质的种子长出的植株,进行生物学和经济性状的比较鉴定。为此,我们提出了测定保存不同时间的种子长出的植株,其个体发育和生殖器官发育特性的任务。
The conservation of plant germplasm is the actual use of the world genetic substrate in breeding programs. Long-term preservation of seeds will occur bad aging process. This process of aging not only loses the seed germination rate but also degenerates the seedlings that are still viable seeds. As a result, it is not difficult to speculate that it has an impact on individual development. Find out the scope of its influence, with great practical significance. Therefore, in breeding work, it is often the case that plants of different seed quality can be biologically and economically cultivated when they are planted in breeding nurseries and sowed at different ages and aged to varying degrees More appraisal To this end, we have proposed the task of measuring the growth of seeds grown at different times, their individual development and reproductive organ development characteristics.