芳草、晨·星原种产卵特性研究

Studies on the Ovipositing Characters of Fangcao and Chen·Xing Parent Races

对芳草、晨星各原种的产卵特性作了调查。结果表明：各品种品系的蛹体重与造卵数、产卵数都有显著或极显著的正相关；多数品种产卵相当快，２小时内产出率在５０％以上，但芳草Ａ、晨光产卵较慢；产卵速度的杂种优势日系品种明显，中系品种不明显；造卵数和产卵数中系、日系都有明显杂种优势；母蛾３日内冷藏对产卵数无影响，不良卵稍有增加；芳草Ａ、晨光的不产卵蛾、少产卵蛾较多；各原种的发蛾率都在９７％以上。

Based on the investigation of the ovipositing characters of Fangchao and Chen ·Xing parent races, the result showed that there was significant or extreme significant positive correlation between the weight of pupae and the number of egg produced and laid. The laying speed of the most varieties was high with over 50% in two hours, but it was slow for Fangcao A and Chengguang. And the hybrid vigor of laying speed for Japanese varieties was more obvious than that for Chinese varieties. There was clear hybrid vigor for the number of egg produced and laid both for Japanese and Chinese varieties. Cold storage of mother moths for three days wouldn't influence the number of egg laid, but the abnormal eggs were more. There were more nonlaying and less-egg-laying moths for Fangcao A and Chengguang. The percentage of emergence of every parent race is more than 97%.