低温贮藏期间不同含水量郁金香种球的几种生理生化指标变化  

Changes in Some Physiological and Biochemical Indexes of Tulipa gesneriana L.Bulbs with Different Moisture Contents during Cold Storage Period

作　　者：孙燚[1] 张延龙[1] 牛立新[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《植物生理学通讯》2008年第2期240-242,共3页Plant Physiology Communications

基　　金：农业部"948"项目(2005-Z39)

摘　　要：郁金香品种‘阿波罗’(Apeldoorn)种球含水量分别为66.5%、64.4%和62.8%,贮藏于(2±0.5)℃下16～28周,16周内定期测定各种生理生化指标的结果表明,随着含水量的降低,种球鲜重减少的速率趋小,用径增加的速率趋大;3种种球的呼吸速率均表现为0～8周急剧下降,8～16周回升;贮藏期间种球的淀粉含量逐渐减少,而可溶性糖含量逐渐增多,含水量为62.8%的种球中可溶性糖含量最高.种植试验表明,随着贮藏时间的增加,含水量为62.8%的种球株高、花高、发芽率和开花率都高于其余种球.Tulip （Tulipa gesneriana cv. Apeldoorn） bulbs contained 66.5%, 64.4% and 62.8% of moisture contents were stored at （2±0.5） ℃ for 16-28 weeks. Some physiological and biochemical indexes of bulbs were determined periodically. The results showed that the fresh weight reduce rate decreased and the circumference increase rate increased along with reduction of moisture contents during storage. The tendencies of respiration intensity of all bulbs were decreased in 0-8 weeks, then increased in 8-16 weeks. The starch content decreased and the soluble sugar content increased, the highest level of soluble sugar content was the bulbs with 62.8% of moisture content. The experimental datum after planting indicated that the plant height, flower height, rate of germination and rate of flowering of bulbs with 62.8% of moisture content were more superior than others.

关 键 词：郁金香种球 含水量 贮藏 

分 类 号：S682.263[农业科学—观赏园艺]