Induction of multiple shoot clumps through shoot tips , plantlet regeneration and agrobacterium - mediated transformation in four hybrid maize ( zea may l . ) , zhengda 619 , nongda 108 , lin ao 1 and denghai 1 , which have been widely released in china , were investigated in this paper 摘要本文研究了大面积推广的4个玉米杂交品种正大619 、农大108 、临奥1号和登海1号的丛生芽的诱导和植株再生。
The organs of the two species responed in different way to salinity . the ratios of roots and shoots of fresh weight of salicornia bigelovii torr . decreased with the increase of nacl concentration in medium , while the ratios of roots and shoots of fresh weight and dry weight of zea mays increased with the increase of nacl concentration in the external medium 两种植物的不同器官对盐渍环境的反应也不同,随盐处理浓度的升高及时间的延长,毕氏海蓬子鲜重及干重基础上的根冠比下降,而玉米鲜重及干重基础上的根冠比呈上升趋势。
In the dissertation , considering the complexity of drought - resistance , comparing to some lines of h99 , jidan 101 , and sidan 8 , the morphological , physiological , and developmental characteristics of drought - resistance in regenerative plants of maize ( zea mays l . ) were systemically studied and compared to 以毛状根再生植株为材料,以h99 、吉单101和四单8为对照,着眼于抗旱性的复杂性、系统性和整体性,分别从植物形态学、植物生理学、植物发育学等角度对玉米抗旱性鉴定指标进行了系统研究。
Were 4 . 03 times higher than that of cytoplasm under 600mmol / lnacl and the na + in vacuoles of zea mays were 2 . 98 times higher than that of cytoplasm under 100mmol / lnacl . 4 . the effect of salt - treatment on the pn , fv / fm and fv / fo . the photosynthesis rate of salicornia bigelovii torr 盐处理对两种植物光合速率及fv fm 、 fv fo的影响一定盐度促进了海蓬子的光合速率,在300mmol lnacl处理时,光合速率值最大,为对照的144 . 7 ,在600mmol lnacl处理时,光合速率值下降,为对照的92 . 2 。
The results we had determined lined as follows : 1 . the effects of salt - treatment on the growth situations of salicornia bigelovii torr . and zea mays both fresh weight and dry weight of whole plant of salicornia bigelovii torr . under 100 - 600mmol / l nacl were higher than the control , 300mmol / l nacl is the optimal nacl concentrations for salicornia bigelovii torr 盐处理对两种植物生长状况的影响nacl处理条件下,毕氏海蓬子的鲜重和干重均高于对照, 300mmol lnacl是其最适生长盐度,高于或低于此盐度时,生长都呈下降趋势。
It showed under 600mmol / l nacl the potential activity and efficiency of primary conversion of light energy of psii in shoots of salicornia bigelovii torr . decreased . 5 . the effects of salt - treament on the osmotic adjustment ability of salicornia bigelovii torr . and zea mays the osmotic adjustment ability of the salicornia bigelovii torr 在100 - 300mmol lnacl处理时,毕氏海蓬子的fv fm 、 fv fo升高, 600mmol lnacl处理时毕氏海蓬子的fv fm 、 fv fo降低,表明只有高盐度时才对毕氏海蓬子光能转化机构的完整性及psii的潜在活性造成伤害。