CAJ | 학술논문

[目的]研究自然条件下选育的3种不同耐寒番茄品系的耐寒指标及其生理特性。[方法]以苗龄21～28 d的番茄幼苗为材料,通过实验室冷处理模拟外界环境条件,鉴定植株的存活及生长状况;研究植株离体叶片冷处理恢复后的形态变化并测定相对电导率,鉴定不同品系番茄植株的耐寒程度,分析电导率与存活率的相关性;测定冷胁迫条件下番茄植株体内可溶性糖和脯氨酸含量变化。[结果]不同品系的番茄冷处理后,叶片形态变化、电导率大小、恢复后的生长状况存在较大差异;不同品系番茄植株体内可溶性糖含量变化差异显著,脯氨酸含量变化差异不显著。[结论]冷处理条件下不同品系番茄叶片的电导率与存活率存在一定相关性,植株耐寒性与可溶性糖含量的积累有关。
[목적]연구자연조건하선육적3충불동내한번가품계적내한지표급기생리특성。[방법]이묘령21～28 d적번가유묘위재료,통과실험실랭처리모의외계배경조건,감정식주적존활급생장상황;연구식주리체협편랭처리회복후적형태변화병측정상대전도솔,감정불동품계번가식주적내한정도,분석전도솔여존활솔적상관성;측정랭협박조건하번가식주체내가용성당화포안산함량변화。[결과]불동품계적번가랭처리후,협편형태변화、전도솔대소、회복후적생장상황존재교대차이;불동품계번가식주체내가용성당함량변화차이현저,포안산함량변화차이불현저。[결론]랭처리조건하불동품계번가협편적전도솔여존활솔존재일정상관성,식주내한성여가용성당함량적적루유관。
[Objective] The aim was to study cold-resistant indexes and physiological characters of three different cold-resistant tomato strains selected under natural conditions. [Method] With 21-28 days tomato seedlings as tested materials, through simulating external environment conditions by the cold treatment in lab, the survival ratio and growth status of seedlings were identified;by studying the morphological change of vitro leaves after cold treatment and determining the relative conductivity, the cold-resistant degree of different tomato strains was identified and the correlation between conductivity and survival rate was analyzed;the variation of soluble sugar and proline content in plant of tomato was determined under the condition of cold stress. [Result] The results showed that leaf morphological changes, size of conductivity and growth status of different tomato strains after cold treatment have significant differences;the variation of soluble sugar contents in plant has significant differences, while the variation of proline content has no significant differences. [Conclusion] There is a certain correlation between conductivity and survival rate of different tomato leaves under cold treatment conditions, and plant cold tolerance is related to accumulation of soluble sugar content.