春秋兼用蚕品种57A·57B、24·46的育成及其四元杂交种的选配  

THE BREEDING OF THE SILKWORM VARIETIES “57A · 57B”,“24 · 46” ANO THEIR HYBRIDS FOR BOTH SPRING AND AUTUMN REARING

作　　者：何斯美[1] 夏玲芝[1] 严孝银[1] 糜懿殿[1] 林泽华[1] 潘沈元[1] 

机构地区：[1]中国农业科学院蚕业研究所

出　　处：《蚕业科学》1990年第1期15-20,共6页ACTA SERICOLOGICA SINICA

摘　　要：采用杂交育种方法,在春、夏、秋不同环境下定向培育,经严格的后代选择,育成二个中系限性品种57A、57B和二个日系品种24、46,然后运用杂种强势的原理,选配成四元杂交种57A·57B×24·46.经多次鉴定结果表明,该四元杂交种的产量、产值比对照种提高3—4%;且体质强健,对叶质要求不高,制种较容易,丝质优良,是春秋兼用的优良蚕品种.Two restriction varietcs of Chinese strain 57A, 57B and two varieties of Japanese strain 24, 46 have been respectively bred by means of oriented cultivation and strict offspring sclection under different climate circumstans in spring, summer and autumn. Then, the hybrid from four elements, which is 57A · 57B × 24 · 46, has bcc'n selected and bred on the basis of hybrid preponderance. According to appraised results for many times, its output and economic value arc 3% to 4% higher than those of CK. Furthermore the variety holds the advantages as follows: healthiness, unrestricted demand to leaf quality, easy egg propagation and top silk quality. So, it is a new fine race for both spring and autumn rearing.

关 键 词：家蚕 品种 57A·57B 24·46 育种 四元杂交种 春秋兼用种 

分 类 号：S882[农业科学—特种经济动物饲养]