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采用完全双列杂交法对刺参中国群体(C)和韩国群体(K)进行群体间杂交和群体内自繁,获得C(♀)×C(♂)、K(♀)×K(♂)、K(♀)×C(♂)和C(♀)×K(♂)4个交配组合的子一代。分析了各交配组受精率、孵化率、附着变态率、浮游幼体和幼参阶段的生长和抗病能力以及杂交子代的杂种优势。结果显示,杂交组与自繁组在受精率和孵化率等方面不存在显著性差异,杂交组附着变态率高于自繁组。C(♀)×K(♂)组在幼参期体长平均值均大于其他3个组,并表现出显著性差异,其体长杂种优势率在9.43%–23.75%之间;其体重从150日龄后表现出杂种优势,在4.09%–34.96%之间。而K(♀)×C(♂)组在幼参期体长和体重除在150日龄时表现为杂种优势,其他时间均表现为杂种劣势。K(♀)×C(♂)组抗灿烂弧菌病能力最强,杂种优势率为26.21%。
C (♀) × C (♂), K (♀) × K (♂) were obtained from both Chinese populations (C) and Korean population (K) , K (♀) × C (♂) and C (♀) × K (♂) 4 mating combinations. The fertilization rate, hatching rate, rate of attachment and metamorphosis, the growth and disease resistance of the larvae and juveniles, and the heterosis of hybrid progenies were analyzed. The results showed that there was no significant difference in fertilization rate and hatching rate between hybrid group and self-propagating group, and the rate of attachment and metamorphosis in hybrid group was higher than that of self-propagating group. The mean values of body length in the C (♀) × K (♂) group were significantly longer than those in the other three groups, and showed significant differences. The body length heterosis rate was 9.43% -23.75% After 150 days of age showed heterosis, between 4.09% -34.96%. However, K (♀) × C (♂) group showed heterosis at the age of 150 days and the body length and body weight at the young plant period, while the hybrid heterosis appeared at other times. The K (♀) × C (♂) group had the strongest resistance to Vibrio pulculentum and the heterosis rate was 26.21%.