Based on the observation and comparative analysis,overall and systematic development of *** in the stages from conjugation of gamete to discharge of zoospore,on the sporophyte stage during the life history of *** is e...
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Based on the observation and comparative analysis,overall and systematic development of *** in the stages from conjugation of gamete to discharge of zoospore,on the sporophyte stage during the life history of *** is entirely expatiated in this ***,on the basis of the results of the experiment,we divided the sporophyte stage of *** into five periods : conjugation of gametes(gamete 7.5 μm×2.0 μm),zygocyte(4-20 μm),sporange(18-40 μm),zoospore formation(sporange 35-55 μm) and discharge of zoospore(zoospore 9.4 μm×3 μm).In this paper it may be in China to find the systemic acknowledgement on the division of the sporange stage during the life history of Monostroma as well as to the seedling cultivation in practice.
Using microsatellite markers with 10 pairs of primers,genetic structure of Oreochromis niloticus,Sarotherodon melanotheron and their hybrids were *** results suggested that:① Six pairs of primers showed a rich polymo...
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Using microsatellite markers with 10 pairs of primers,genetic structure of Oreochromis niloticus,Sarotherodon melanotheron and their hybrids were *** results suggested that:① Six pairs of primers showed a rich polymorphic,which can be used as genetic markers for the genetic diversity study of these tilapias.② The analysis based on the six pairs of primers showed that the average heterozygosity(H)ranged as:*** ♀× ***♂(0.725),*** ♀ × *** ♂(0.692),***(0.537),***(0.485).The highest effective numbers of alleles(Ne)existed in ***♀×***♂(3.79),the lowest existed in ***(1.92).The average polymorphism information content(PIC)of 4 tilapias was 0.584,the rank from high to low as,*** ♀ × *** ♂(0.668),*** ♀× *** ♂(0.643),***(0.375),***(0.333).③ The fact of enhanced heterozigosity of hybrids suggested that there were the genetic basement of cross breeding in tilapia.
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