摘要
生长素IAA,NAA能促进微型薯个数和重量的增加,其处理的最佳浓度分别为2.0ppm和3.0ppm,2,4-D效果不显著;3种激素的效应大小为NAA>IAA>2,4-D;细胞分裂素对微型薯数和成薯指数的影响均呈抛物线形式变化,BA的最佳浓度分别为11.59ppm和10.04ppm,KT的最佳浓度分别为14.72ppm和12.63ppm,ZT的最佳浓度分别为10.75ppm和10ppm,其效应大小为BA>KT>ZT;ABA促进了块茎数和成薯指数的增加,但没有达显著水平;乙烯利处理能极显著提高微型著数和成薯指数,且以20ppm为最好;GA抑制微型薯的形成,且产生丛生枝;不同生长调节剂对微型薯形成的效果不同,香豆素促进块茎形成,而BR和PP_(333)只在低浓度(0.1~1.0ppm)有促进作用,高浓度则有抑制作用,助壮素抑制微型薯的形成。
The auxins, IAA and NAA, can stimulate the formation of microtubers in vitroboth in number and weight, the best concentrations is 2.0ppm and 3.0ppm respectively, whereas the effect of the auxin 2,4-D is not significant. The rank of the three auxins is NAA>IAA>2,4-D. The effects of cytokinins on the microtuber number per flask and IP follow the quadratic curve, and the best concentrations are 11.59 ppm and 10.04 ppm for BA, 14.72 ppm and 12.63 ppm for KT and 10.75 ppm and 10 ppm for ZT, respectively, the rank of the effect was BA>KT>ZT. The ABA has an effect on the microtuber number per flask and IP and the idcal concentration is 5 ppm but the effect is not significant. The use of ethephon can raise the number of microtuber and IP significantly at 0.01 level and 20ppm is best. GA inhibites the formation of microtubers. The effect of different growth regulators is different. Coumarin promotes the formation of microtubers, nevertheless BR and PP_(333) improve the tuberization only at the low concentrations of 0.1~1.0 ppm, high concentrations have an inhibitory effect. Pix inhibites tuberization at all levels of concentrations。
出处
《马铃薯杂志》
1992年第1期14-22,共9页
Chinese Potato Journal