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对不同倍性蝴蝶兰小孢子母细胞减数分裂及其杂交后代的根尖染色体数进行了检测。结果表明,除三倍体和三倍体杂交未能产生杂交后代外,不同倍性蝴蝶兰杂交后代的倍性均出现分离。二倍体和二倍体、二倍体和四倍体杂交均产生二倍体、三倍体和四倍体;二倍体和三倍体杂交产生二倍体、三倍体、五倍体和非整倍体;三倍体和四倍体随正反交不同而异,三倍体×四倍体的后代倍性有三倍体、四倍体、八倍体和非整倍体,而四倍体×三倍体的后代倍性有三倍体、四倍体、五倍体和非整倍体;四倍体和四倍体杂交产生二倍体、三倍体、四倍体、五倍体、六倍体和非整倍体。不同倍性蝴蝶兰的小孢子母细胞减数分裂普遍存在微核、落后染色体和三分体等异常现象,导致小孢子和杂种后代的倍性出现多样性。
The meiosis of microspore mother cells and the number of apical chromosomes in hybrid progeny of different ploidy Phalaenopsis were studied. The results showed that, except triploid and triploid hybrids failed to produce hybrid progenies, the ploidy of different ploidy Phalaenopsis hybrid progenies were isolated. Diploid, diploid, diploid and tetraploid hybrids produce diploid, triploid and tetraploid; diploid and triploid hybrids produce diploid, triploid, And aneuploidy; Triploid and tetraploid with different back and forth, the triploid × tetraploid offspring triploid, tetraploid, octagonal and aneuploidy, and Tetraploid × triploid progeny triploid triploid, tetraploid, pentaploid and aneuploidy; tetraploid and tetraploid hybridization to produce diploid, triploid, tetraploid, five Ploidy, hexaploid and aneuploidy. Different ploidy Phalaenopsis microsporocyte meiosis prevalence of micronuclei, lagging chromosomes and trisomy and other anomalies, resulting in ploidy and hybrid offspring ploidy appear diversity.