【摘要】 采用杂交育种结合系统选择的方法。经累代高温多湿环境下培育,育成了抗逆性较强,孵化、眠起、老熟齐一,茧丝质优良的中系蚕品种“丰一”和一粒茧丝长长、综合性状较优的日系蚕品种“54A”,并都具有较强的抗氟性能。其一代杂交种通过实验室以及江苏省共同鉴定结果表明:比对照种苏3·秋3×苏4万蚕产茧量提高5％,万蚕茧层量提高13％,解舒丝长增长100—200米,净度95分,强力3.8—3.9克/旦。更多还原

【Abstract】 According to the climatic characteristics of the Yangtze River Valley, we employed the breeding method of combining cross breedings and line selection and created an artificial microclimate with high temperature ( 28-30 ℃ ) and humidity (RH was 85-90% ) to take the breeding tests. After breeding several generations under this microclimate, a Chinese silkworm strain "Feng 1" which has a relatively high resistance to diseases, a unison in incubating, molting, exuviating and maturing, and a good silk quality; a Japanese silk worm strain "54A" , which has a longer silk length of one cocoon, and be-tter complex properties have been bred. Both strains have the characteristics of strong resistance to fluoride contamination.Compared to the control strain "Su3-Qiu3× Su4", their F1 hybrids have a 5% increase in cocoon output and a 13% increase in cocoon shell weight of 10000 silkworms, 100 to 200 meter longer in non-broken filament length, 95 marks of neatness defects, and 3.8-3.9 grams/denier silk strength.更多还原