CAJ | 학술논문

本研究旨在探明结缕草种子发育过程中生理生化变化,为种子生产提供科学的理论依据,在山东胶州,结缕草盛花期后每隔3～5 d取1次种子样品,对其发育过程中的生理生化变化进行研究.结果表明,结缕草种子发育过程中含水量是先升高,而后逐步降低,而种子干、鲜重则逐渐增加,最后略有降低.可溶性糖含量变化总趋势是降低(5.0%),而淀粉含量先升后降,再逐渐增加,最后保持在15.0%左右,种子酸性磷酸酯酶活性逐渐增强,且不同成熟度间的活性差异极显著(P＜0.01).种子生长素(IAA)和赤霉素(GA)含量逐渐减少,而脱落酸含量是逐步增加,最后达72.7 μg/100 g鲜重.综合考虑,结缕草适宜的收获期应在盛花期后36 d左右,即6月15日左右,此时种子活力强,含水量为26%～28%,千粒重为0.89 g.
본연구지재탐명결루초충자발육과정중생리생화변화,위충자생산제공과학적이론의거,재산동효주,결루초성화기후매격3～5 d취1차충자양품,대기발육과정중적생리생화변화진행연구.결과표명,결루초충자발육과정중함수량시선승고,이후축보강저,이충자간、선중칙축점증가,최후략유강저.가용성당함량변화총추세시강저(5.0%),이정분함량선승후강,재축점증가,최후보지재15.0%좌우,충자산성린산지매활성축점증강,차불동성숙도간적활성차이겁현저(P＜0.01).충자생장소(IAA)화적매소(GA)함량축점감소,이탈락산함량시축보증가,최후체72.7 μg/100 g선중.종합고필,결루초괄의적수획기응재성화기후36 d좌우,즉6월15일좌우,차시충자활력강,함수량위26%～28%,천립중위0.89 g.
This research aimed to provide a scientific theoretical basis for zoysiagrass seed production by investigating changes of physiology and biochemistry during seed development. Every three or five days, seeds of zoysiagrass were harvested after peak anthesis at Jiaozhou in Shandong province, and the changes in seed development were studied. The seed moisture content rose first, then gradually dropped. The fresh weight and dry weight of seeds slowly increased during seed development and finally decreased a little. The soluble sugar content of seeds decreased by about 5.0%. The starch content increased sharply and then slowly decreased, but stayed about 15.0% towards the end of development. The acid phosphoesterase activity of seeds harvested at different times were significantly increased (P＜0.01). IAA and GA contents slowly reduced with seed development. However, the contents of ABA rose gradually and reached 72.7 μg/100 g fresh weight. In conclusion, the optimal harvest time was the 36th days after peak anthesis (about June 15) in this experiment, and when the seed vigor was better, its moisture content and 1 000-seed weight were 26%-28% and 0.89 g, respectively.