Effects of water extracts of Solidago canadensis on gametophyte development of Dryopteris erythrosora
To investigate the effect of Solidago canadensis Linn.on the gametophyte development of ferns,0.0 g·mL-1 water extract was taken as the control,and the effects of 0.8,2.4,and 4.0 g·mL-1 water extracts from its roots,stems,and leaves on spore germination and sexual differentiation of Dryopteris erythrosora(D.C.Eaton)Kuntze were studied.The results show that the spore germination rates of D.erythrosora in water extract treatment groups of roots,stems,and leaves of S.canadensis are all lower than those in the control group,and with the increase of mass concentration of the water extract,the spore germination rates gradually decrease,among which,the spore germination rate in 4.0 g·mL-1 leaf water extract treatment group is significantly lower than that in the control group in general during the cultivation period of 7-29 d,and the spore germination rate is the lowest in all treatment groups.Compared with the control group,the water extract treatment group of each part all result in an increase in the proportion of male gametophytes and a decrease in the proportions of female and hermaphroditic gametophytes,and under water extract treatment at the same mass concentration,the proportions of male gametophytes in stem water extract treatment groups are generally the highest,in which,the proportion of male gametophytes in 4.0 g·mL-1 stem water extract treatment group is the highest,reaching 80.4％;there are no significant differences in proportions of the three types of gametophytes between 0.8 g·mL-1 root,stem,and leaf water extract treatment groups and the control group;the differences in proportions of the three types of gametophytes are significant in general between 4.0 g·mL-1 root,stem,and leaf water extract treatment groups and the control group.Overall,the inhibitory effect of leaf water extracts of S.canadensis on spore germination is relatively strong,the effect of stem water extracts on sex differentiation of D.erythrosora is relatively strong,the water extracts of the above-ground parts have a stronger inhibitory effect on spore germination and impact on sex differentiation compared with the under-ground parts,and these effects exhibit a dose-effect relationship.
万方数据
维普
