A new type of triploid crucian crap?red crucian carp (♀)×allotetraploid (♂) |
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作者姓名: | SHEN Jiamin LIU Shaojun SUN Yuandong ZHANG Chun LUO Kaikun TAO Min ZENG Chen LIU Yun |
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作者单位: | Key Laboratory of Protein Chemistry and Developmental Biology of State Ministry of China, College of Life Science, Hunan Normal University, Changsha 410081, China |
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基金项目: | Supported by National Natural Science Foundation of China (Grant Nos .30330480 ,30571444),the Major State Basic Research DevelopmentProgramof China (Grant No .2001CB109006),Grant for Doctoral Station of University of the Education Ministry of China (200405422001),the Programfor Changjiang Scholars and the Innovative Research Teamin University (No .IRT0445) |
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摘 要: | A new type of triploid hybrids (TC) was produced by crossing red crucian carp (♀) with allotetraploid hybrids (♂). This type of triploids with no barbel was spindle-shaped and gray in color. Compared with their parents, some data of the morphological traits in the triploid hybrids were intermediate to those of their parents, and some were beyond their parents with heterozygous traits. Under the same culture conditions, the growth rate of the new type triploids was faster than their maternal red crucian carp (RC). The gonadal development of triploids was obviously slower than that of diploids, and the germ cells in them were degenerated. Compared with another type of triploids produced by Japanese crucian carp (♀) with allotetraploid hybrids (♂), the new type triploids not only kept faster growth rate and sterility, but also had no barbel that was similar to the common carp. The absence of the barbel in the new type of triploids has the important significance in both the inheritance and fish breeding.
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关 键 词: | new type of triploid red crucian carp allotetraploid hybrids morphological traits gonad growth rate. |
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