中国蔬菜Issue(9)：17-22,6.
炼苗期基质相对含水量对黄瓜幼苗贮藏特性的影响
Effect of Substrate Relative Water Content in Seedling Hardening Stage on Storage Characteristics of Cucumber Seedling
摘要
Abstract
To explore the effect of substrate moisture in seedling hardening stage on storage characteristics of commercial cucumber seedling,substrates of cucumber seedlings in hardening stage were treated with different water contents, their growth indicators related to quality during different storaging time,and the recovered growth indicators after transplanting were also measured. Single and composite indicators for evaluating storaging quality of cucumber seedlings were screened. The results show that with the increase of storaging time,the leaf integrity index,starch contents,and leaf growth rate of cucumber seedlings under all substrate moisture treatments were decreased. On the whole,storage for 0 day (direct transplanting),under treatment with substrate relative water content between 45% - 55 %,the seedlings grown had the best recovery after transplanting. Storage for 2 days, under treatments with substrate relative water content between 30% - 40% or 45% - 55 % in seedling hardening stage,the various indicators of cucumber seedlings and their recovery abilities after transplanting presented well. Storage for 4 days,seedling quality deterioration was obvious,but there were no significant differences between all treatments. Storage for 6 days,only under the treatment with substrate relative water content between 75% - 85 %,the cucumber seedlings could resume growth after transplanting. By correlation analysis we concluded that the leaf integrity index of cucumber seedlings in storaging period had the highest correlation coefficient with their growth resume abilities after transplanting,which could be taken as the single indicator. Through path analy-sis,we believed that the composite index of‘soluble sugar content (mg· g-1 ,FW) +86.24 specific leaf weight (g·dm-2) - 474.56 underground root dry weight (g) ’ could well reflect the seedling growth recovery ability after transplanting .关键词
黄瓜幼苗/炼苗期/基质相对含水量/贮藏特性/关键指标/筛选Key words
Cucumber seedling/Seedling hardening stage/Substrate relative water content/Storage characteristics/Key index/Screen引用本文复制引用
李娟起,杨天,潘小兵,田永强,赵景文,陈青云,高丽红..炼苗期基质相对含水量对黄瓜幼苗贮藏特性的影响[J].中国蔬菜,2014,(9):17-22,6.基金项目
公益性行业（农业）科研专项（201303014），现代农业产业技术体系北京市果类蔬菜创新团队项目，国家星火计划项目 （）
