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云南农业大学学报(自然科学) 2017, Vol. 32 Issue (1) :52-56    DOI: 10.16211/j.issn.1004-390X(n).2017.01.007
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不同蜡封处理对木薯种茎失水速率的影响
刘海刚1, 韩学琴1, 魏云霞2, 孟富宣1, 段元杰1, 杨玉皎1, 沙毓沧1, 黄洁2
1. 云南省农业科学院热区生态农业研究所, 云南 元谋 651399;
2. 中国热带农业科学院热带作物品种资源研究所/农业部木薯种质资源保护与利用重点实验室, 海南 儋州 571737
The Influence of Different Processing by Wax Sealing on the Water Loss Rate of Cassava Stem
LIU Haigang1, HAN Xueqin1, WEI Yunxia2, MENG Fuxuan1, DUAN Yuanjie1, YANG Yujiao1, SHA Yucang1, HUANG Jie2
1. Institute of Tropical Eco-agricultural Sciences, Yunnan Academy of Agricultural Sciences, Yuanmou 651399, China;
2. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Conservation and Utilization of Cassava Genetic Resources, Ministry of Agriculture, Danzhou 571737, China

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摘要 

干燥无阳光直射的室内,测定了6种不同部位蜡封处理对‘华南10号’木薯短段(15.0 cm)种茎失水率的影响。结果表明:在30 d的贮藏期中,木薯种茎相对含水率表现为全封 > 封两端 > 封中部 > 封顶端 > 封基端 > 不封,所有蜡封种茎处理均与不封达到极显著差异,而平均每天失水速率表现为不封(2.75%) > 封基端(2.38%) > 封顶端(2.06%) > 封中部(1.94%) > 封两端(1.87%) > 全封(1.29%),蜡封处理能有效提高种茎的相对含水率及降低其失水速率,且贮藏时间越长,保水效果越好;随着贮藏时间的延长,全封与封两端之间、封顶端与封基端之间的相对含水率差值越来越大,而封两端、封中部与封顶端之间的相对含水率差值比较稳定。综合考虑保水效果、省工省蜡和方便操作等因素,建议在木薯生产中采用封两端或封顶端的蜡封处理技术。

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刘海刚
韩学琴
魏云霞
孟富宣
段元杰
杨玉皎
沙毓沧
黄洁
关键词木薯种茎   蜡封   含水率   失水速率     
Abstract

The effect of 6 different parts of wax sealing on the water loss rate of cultivar Huanan (SC10) cassava short segment (15.0 cm) was determined under dry indoor without direct sunlight. The results showed that the relative moisture content of cassava stem manifest as fully sealed > sealed at both ends > sealed at the middle surface > sealed at the top end > sealed at the base end > no sealed (CK), and all wax sealing treatments were very significantly difference (P<0.01) to CK. The average rate of water loss manifest as no sealed (2.75%) > sealed at the base end (2.38%) > sealed at the top end (2.06%) > sealed at the middle surface (1.94%) > sealed at both ends(1.87%) > fully sealed (1.29%) within 30 days storage period. All wax sealing treatments could effectively increase the relative moisture content meanwhile reduce water loss rate. The more longer storage period, the better effect of water retention. The difference of relative water content were enlarge when prolong the storage period between fully sealed and sealed at both ends, or sealed at the top end and sealed at the base end. The difference of relative water content kept relatively stable among sealed at both ends, sealed at the middle surface and sealed at the top end within 30 days storage duration. Taking water conservation, labor and wax cost and convenience into consideration, we recommend that sealing at both ends or sealing at the top end of cassava stem in the production.

Keywordsstem of cassava   wax sealing   moisture content   water loss rate     
Received 2015-11-16;
Fund:

现代木薯产业技术体系建设专项资金(CARS-12-hnhj);中国热带农业科学院热带作物品种资源研究所非营利性科研机构改革专项启动费资助项目(PZS-201518)。

Corresponding Authors: 黄洁(1966-),男,广东湛江人,硕士,研究员,主要从事木薯栽培与推广。E-mail:hnhjcn@163.com     Email: hnhjcn@163.com
About author: 刘海刚(1982-),男,云南曲靖人,硕士,助理研究员,主要从事木薯抗旱栽培。E-mail:lhg_728@sina.com
引用本文:   
刘海刚, 韩学琴, 魏云霞, 孟富宣, 段元杰, 杨玉皎, 沙毓沧, 黄洁.不同蜡封处理对木薯种茎失水速率的影响[J]  云南农业大学学报(自然科学), 2017,V32(1): 52-56
LIU Haigang, HAN Xueqin, WEI Yunxia, MENG Fuxuan, DUAN Yuanjie, YANG Yujiao, SHA Yucang, HUANG Jie.The Influence of Different Processing by Wax Sealing on the Water Loss Rate of Cassava Stem[J]  Journal of Yunnan Agricultural University, 2017,V32(1): 52-56
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