The results show that with the increasd of applied phosphoric fertilizer the inorganic phosphate ( pi ) content increases obviously in wheat plants , and the sucrose content in wheat shoot was reduced at different developing stages 结果表明，随着施磷量的增加，小麦不同生育时期的植株体内无机磷含量明显增加，而茎叶中蔗糖含量呈降低趋势。
In this study , systems of rapid propagation of the cultivars such as d . zingiberensis , d . panthaica and d . composite were setup to find the best way to meet the need of producing , and to establish the base of introduction , breeding and cultivar improvement of foreign dioscorea with high diosgenin ; in addition , there are two strategies to obtain polyploids combining with chromosome engineering : screeding natural mutations and mutation breeding were carred out on d . zmgiberensis . exploratively studies were done on rapid propagation of the three dioscorea plants . the result showed : explants of d . pathaica obtained the appreciate propagation efficency on ms + ba1 . 0mg / l + naa0 . 1mg / l , ms basic medium containing 6 . 0mg - 1 ba , l . 0mg - 1 kt and sucrose at 30gl - 1 or 60g1 - 1 was the appreciate medium for microtuberization 三种薯蓣属植物离体再生体系培养条件的探索试验结果表明：黄山药外植体适宜的增殖培养基为ms + ba1 . 0mg / l + naa0 . 1mg / l ，微型块茎诱导为ms + ba6 . 0mg / l + kt1 . 0mg / l + 3蔗糖，高浓度的蔗糖含量( 6 )能提高微型薯蓣的诱导率，但对其诱导起关键作用的还是ba的浓度；菊叶薯蓣增殖效果较好的培养基为ms + ba1 . 0mg / l ，以ms培养基为诱导微型薯蓣的最佳选择，诱导率可达50 ；盾叶薯蓣最适宜的增殖培养基为ms + ba2 . 0mg / l ，在诱导微型薯蓣的实验中发现，当ba浓度为6 . 0mg / l和8 . 0mg / l时， 15d左右节间处膨大形成绿色圆球状小块，但继续培养其上则开始分化芽。
