硬粒小麦与珍珠栗远缘杂交的受精作用和胚胎发育  

FERTILIZATION AND EMBRYO DEVELOPMENT IN HYBRIDIZATION BETWEEN WHEAT AND PEARL MILLET

作　　者：赵云云[1] 雷和田[1] 王景林 

机构地区：[1]首都师范大学生物系

出　　处：《植物学通报》1997年第1期41-43,共3页Chinese Bulletin of Botany

基　　金：国家自然科学基金

摘　　要：对硬粒小麦（ＴｒｉｔｉｃｕｎｄｕｒｕｍＤｅｓｆ．）和珍珠栗（Ｐｅｎｎｉｓｅｔｕｍｇｌａｕｃｕｍｓｙｎ．Ｐ．ａｍｅｒｉｃａｎｕｍ）远缘杂交的受精作用和胚胎发育进行了研究。对授粉后的１９２个硬粒小麦子房进行制片观察，７．８１％发生双受精，具胚和胚乳，但胚乳发育往往落后于胚的发育；３．１３％只发生了单卵受精，只产生胚而无胚乳；１．０４％发生了单极核受精，只产生胚乳而无胚。总受精率为１１．９８％，成胚率为１０．９４％。由于胚乳的缺乏或发育异常及败育。The fertilization and embryo development in wide crosses of Triticum durum Desf.and Pennisetum glaucum syn.P.americanum were studied.In a sample of 192 flo rets fixed after pollination,7.81% had doublefertilization and had embryo and endosperm,but endosperm development was slower than that of the embryos,3.13% had only embryo and 1.04% had only endosperm.The frequency of fertilization and embryo formation were11.98% and 10.94%.Because the endosperms were abnormal,it was very difficult to produce viable mature seeds.

关 键 词：小麦 珍珠栗 远缘杂交 胚胎发育 受精 硬粒小麦 

分 类 号：S512.103.5[农业科学—作物学] S515.035.1