贮藏方式对伊犁绢蒿种子萌发及生理特性的影响

Effects of storage methods on the seed germinationand physiological characteristics ofSeriphidium transiliense

摘要:

通过对常温贮藏(N)、常温真空贮藏(NZ)、零上低温贮藏(C)、真空零上低温贮藏(CZ)、零下低温贮藏(F)及真空零下低温贮藏(FZ)6个月的伊犁绢蒿种子萌发特征、千粒重、含水率、相对电导率及可溶性糖含量的测定,探讨贮藏方式对伊犁绢蒿种子萌发及种子质量的影响,并通过隶属函数综合评价方法筛选最适贮藏方式。结果表明:真空低温贮藏下伊犁绢蒿种子含水率、千粒重均高于非真空常温贮藏,且CZ种子含水率显著高于其他处理26.90%~142.27%,FZ、CZ千粒重较NZ、N高22.61%~26.42%(P＜0.05);N、NZ胚根长显著高于FZ,FZ、CZ胚芽长、幼苗干重均显著高于NZ、N,而低温真空贮藏下发芽率、出苗率高于常温贮藏;可溶性糖含量真空处理高于非真空处理,FZ、CZ较N、C显著增加34.27%~56.18%,而相对电导率低温贮藏显著低于常温贮藏,C、CZ、F、FZ较N、NZ显著降低33.15%~43.56%。综上,伊犁绢蒿种子活力FZ ＞CZ＞NZ ＞F＞C＞N,伊犁绢蒿种子最佳贮藏方式为真空零上和零下贮藏。

Abstract:

In order to investigate the effect of storage mode on germination and seed quality,the germination characteristics,1000-grain weight,moisture content,relative conductivity and soluble sugar content of Seriphid-iu mtransiliense seeds stored at normal temperature (N),vacuum-normal temperature (NZ),cool temperature(C),vacuum-cool temperature(CZ),freezing temperature(F) and vacuum-freezing temperature(FZ) for six months were measured.Then,the optimum storage mode was selected by comprehensive evaluation of membership function.The results showed that the water content and 1000-grain weight of the seeds of S.transiliense stored in vacuum at low temperature were higher than those of the seeds stored in non-vacuum at room temperature,and that the water content of the seeds treated by CZ was significantly higher than that of the seeds treated by other methods by 26.90%~142.27%.Further,The experiments also showed that the 1000-grain weight of the seeds treated by FZ and CZ was 22.61%~26.42% higher than that of the seeds treated by NZ and N (P＜0.05).The radicle length of the seeds treated by N and NZ was significantly higher than FZ,the embryo length and seedling dry weight of the seeds treated by FZ and CZ were significantly higher than those of the seeds treated by NZ and N,while the germination rate and emergence rate of the seeds treated by under low temperature and vacuum storage were higher than those of the seeds under normal temperature storage.The soluble sugar content of the seed in vacuum treatment was higher than that of the seed in non-vacuum treatment.Compared with that of the seed treated by N and C,the soluble sugar content of the seed treated by FZ and CZ increased by 34.27%~56.18%.Compared with that of the seed treated by N and NZ,the seed relative conductivity of of the seed treated by C,CZ,F and FZ decreased by 33.15%~43.56%.To sum up,the seed vigor of S.transiliense could be ranked as follows: FZ＞CZ＞NZ＞F＞C＞N.The optimal storage mode of S.transiliense seed was vacuum-cool temperature and vacuum-freezing temperature.