摘要:
对福建省近十年来育成和推广的18个水稻品种基因型和农艺性状进行了分析,结果表明多数品种继承“矮仔占”及其衍生品种“珍珠矮”、“珍汕”和“珍龙410”的血统。因此,水稻单产和抗稻瘟病性能都有不断提高和增强。同时,对今后品种改良进行探讨。继续发挥“矮仔占”及其衍生系的优良遗传性,导入异源和野生稻有用基因。着重改进育种技术:1.选材和配组,主体亲本、对温光不敏感和特异中间材料的应用。2.杂种后代的处理,F1、F2单株选择和抗性筛选。3.轮回选择法等的应用。
Abstract:
Agronomic characters genotypes for 18-commercial varieties were analysed during the last decade in Fujian.The result indicated that most of them succeeded the descent of variety "Ai-Zi-Zhan" and its derivative varieties such as "Zhen-Zhu-Ai", "Zhen Shan" and "Zhen-long 410". Therefore, their yield potential and resistance to blast are evidently increased.In future, it is necessary to continue the development of the superior genetics of "Ai-Zi-Zhan" and to transfer some available hetero-gereous and wild rice genes into new strains(or breeding lines)for further progress.The innovations on rice breeding techniques are as follows: 1.Selecting donor parents making hybridization combinations, and utilizing the doner parents, the cultivars insensitive to temperature and photoperiod, and other special breeding lines. 2. Treating the hybridi-zation generations, such as selecting the individual plant from F1, F2…, screening those plants with different resistibility. 3. Application of the method of recurrent breeding.
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