用800和1200ppm B_9处理花生植株后,叶片增厚,叶色浓绿、株型矮化;叶片中淀粉积累和可溶性糖含量显著下降;叶片组织 ATP 酶活性提高,叶肉细胞质膜和韧皮部筛管、伴胞和转移细胞质膜上的 ATP 酶活性明显增强。结果说明 B_9处理使花生光...用800和1200ppm B_9处理花生植株后,叶片增厚,叶色浓绿、株型矮化;叶片中淀粉积累和可溶性糖含量显著下降;叶片组织 ATP 酶活性提高,叶肉细胞质膜和韧皮部筛管、伴胞和转移细胞质膜上的 ATP 酶活性明显增强。结果说明 B_9处理使花生光合作用加强、碳水化合物运转快、与B。可提高叶肉细胞质膜和维管束细胞质膜上的 ATP 酶活性有关;韧皮部细胞质膜的 ATP 酶活性与光合产物的主动装人有关.展开更多
The solidification microstructure of Fe_(70)Cr_(18)Mo_2Si_1B_9 single-roll quenched ribbons with dif- ferent rotating speed of roller and under different atmosphere conditions was investigated. Apart from usual crysta...The solidification microstructure of Fe_(70)Cr_(18)Mo_2Si_1B_9 single-roll quenched ribbons with dif- ferent rotating speed of roller and under different atmosphere conditions was investigated. Apart from usual crystallization by homogeneous and heterogeneous nucleation,it was found that α-iron cohnnnar grains with strong preferred orientation formed beneath free surface and that spheres of α-iron single coastal with a size of several μm up to 20μm,which have rarely been reported,appeared inside the ribbons.There was experirnental evidence suggesting that clusters of metal atoms formed from fluctuation in early undercooled liquid might play a role as pre-existed nuclei and,in fact,control the formation of amorphous for this alloy.展开更多
文摘用800和1200ppm B_9处理花生植株后,叶片增厚,叶色浓绿、株型矮化;叶片中淀粉积累和可溶性糖含量显著下降;叶片组织 ATP 酶活性提高,叶肉细胞质膜和韧皮部筛管、伴胞和转移细胞质膜上的 ATP 酶活性明显增强。结果说明 B_9处理使花生光合作用加强、碳水化合物运转快、与B。可提高叶肉细胞质膜和维管束细胞质膜上的 ATP 酶活性有关;韧皮部细胞质膜的 ATP 酶活性与光合产物的主动装人有关.
文摘The solidification microstructure of Fe_(70)Cr_(18)Mo_2Si_1B_9 single-roll quenched ribbons with dif- ferent rotating speed of roller and under different atmosphere conditions was investigated. Apart from usual crystallization by homogeneous and heterogeneous nucleation,it was found that α-iron cohnnnar grains with strong preferred orientation formed beneath free surface and that spheres of α-iron single coastal with a size of several μm up to 20μm,which have rarely been reported,appeared inside the ribbons.There was experirnental evidence suggesting that clusters of metal atoms formed from fluctuation in early undercooled liquid might play a role as pre-existed nuclei and,in fact,control the formation of amorphous for this alloy.
