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甘薯品种玉丰、高系 14号和 Kandaba在生育期内用 6 0 Coγ射线慢照射 ,对照射后的材料进行茎尖组培 ,通过体细胞胚胎发生途径再生出大量植株。将这些再生植株移栽到大田 ,对辐照后代的形态特征和经济特性进行了调查和分析。结果表明 ,辐照后代 M1 V1 和 M1 V2 在顶叶形、叶形、顶叶色、叶脉色、脉基色、薯形及薯肉色、产量、干物率、食味、Brix等性状上发生了广泛的变异 ,并且这些变异是稳定的。获得了一批薯形、薯肉色、高产量、高干率和高 Brix的同质突变体
Sweet potato varieties Yufeng, Kaohsiung-14 and Kandaba were irradiated slowly with 60Coγ ray during the growth period. The irradiated materials were shoot-tip tissue culture and regenerated a large number of plants through somatic embryogenesis. These regenerated plants were transplanted to the field to investigate and analyze the morphological and economic characteristics of irradiated progenies. The results showed that the M1 V1 and M1 V2 of the irradiated offspring had a wide range of morphological characteristics such as parietal lobe shape, leaf shape, top color, leaf color, pulse color, potato shape and flesh color, yield, dry matter content, Variation, and these variations are stable. A number of homozygous mutants with potato-shaped, flesh-colored, high yield, high dry matter, and high Brix were obtained