<<登录旧系统审稿   登录新系统审稿>>

建议您登录自己的邮箱点击审稿链接进入审稿系统 ×
首页 学报新闻 学报概况 编委会 专家库 学术影响 投稿指南 审核流程 标准规范 下载专区 投诉邮箱 联系我们 EngLish

正文 您当前的位置:首页》正文

桑树叶片SPAD值及其与养蚕成绩的相关性
作者: 邱长玉  朱方容*  林 强  朱光书  曾燕蓉  崔秋英  张朝华  
单位: (广西蚕业科学研究院  南宁 530007)  
关键词: 桑树  叶片  叶绿素  SPAD值  叶质  养蚕效果  
分类号:S888.2
出版年,卷(期):页码:2015 ,46 ( 12 ): 页码:2081-2086
摘要:

【目的】研究桑树叶片SPAD值及其与养蚕成绩的相关性,为桑树优良品种筛选育提供参考。【方法】应用SPAD 502叶绿素测定仪对2个桑园的26个桑品种(杂交组合)叶片的SPAD值进行测定,并对其进行养蚕叶质鉴定。【结果】在20个桑品种(杂交组合)中,大部分材料的最大叶片近尖区的SPAD值较高,其次为中央区。在6个桑品种(杂交组合)中,第13叶或第14叶的SPAD值相对较高,为43.6~49.3,与其他部分叶位的差异达显著水平(P<0.05,下同);而第3叶的SPAD值显著低于大部分叶位,为27.5~35.5;桂桑优12第3~14叶的平均值最高,为41.0;自第3到第14叶位,SPAD值总体上呈递增趋势。在20个桑品种(杂交组合)中,以M1×桂诱93554、桂诱94200×桂诱P58、M1×桂诱9104的桑叶SPAD值及其养蚕效果较好,以M1×桂诱9104的全茧量、茧层量、万蚕产茧层量、5龄日产茧层量最高,分别比对照品种沙2×伦109增产6.5%、5.5%、5.7%和6.9%;其次为M1×桂诱93554。相关分析结果表明,桑叶SPAD值与桑叶养蚕的茧层量、茧层率、万蚕茧层量、5龄日产茧层量之间呈显著或极显著(P<0.01)正相关。【结论】SPAD值可作为桑树叶质评价和良种选育的参考指标。

【Objective】The SPAD values of mulberry leaves and their correlation with different indices of rearing silkworm, in order to provide references for breeding mulberry improved varieties. 【Method】The SPAD values of different leaves or leaf surface areas for 26 mulberry varieties(hybridized combinations) collected from two mulberry plantations were determined with Chlorophyll-meter SPAD-502 at different stages, respectively. The leaves of 20 mulberry varieties (hybridized combinations) were used for rearing silkworm to evaluate their qualities. 【Result】Among 20 mulberry varieties or combinations, the nearing top area of max leaf for most of them presented higher SPAD value, followed by central area. Among 6 mulberry varieties or combinations, the 13th or 14th leaf was found to has higher SPAD value(43.6-49.3), which was significantly higher than most of other leaf orders(P<0.05); the SPAD value(27.5-35.5) of the 3rd leaf was significantly lower than most of leaf orders. Guisangyou 12 was found to has the highest SPAD value(41.0). The SPAD value from the 3rd to 14th leaf showed an increasing trend.  As to 20 mulberry varieties or combinations, three combinations viz., M1×Guiyou 93554, Guiyou 94200×Guiyou P58 and M1×Guiyou 9104 were found to have better silkworm rearing effects being higher SPAD value. The highest cocoon weight, cocoon shell weight, cocoon shell yield per 10000 larvae, and cocoon shell yield per day in 5th instar were found in M1×Guiyou 9104, which were 6.5%, 5.5%, 5.7% and 6.9% higher than those of the control Sha 2×Lun 109, followed by M1×Guiyou 93554. The correlation analysis results showed that, the  SPAD value of mulberry leaf was significantly positively correlated with cocoon shell weight, cocoon shell rate, cocoon shell yield per 10000 larvae, and cocoon shell yield per day in 5th instar(P<0.05 or P<0.01). 【Conclusion】The SPAD value could be used as reference index for evaluating mulberry leaf quality and breeding improved varieties.

基金项目:
作者简介:
参考文献:
服务与反馈:
文章下载】【加入收藏
总浏览数: 8 2 9 2 4 0 1  今日总人数: 7 1 6 5
主办:广西农业科学院    地址:广西南宁市大学东路174号   邮政编码:530007
电话:(+86)-771-3243905; (+86)-771-3244920   电子邮箱:nfnyxb@163.com
Copyright © 2011 Nfnyxb.com, All Rights Reserved  版权所有©2011《南方农业学报》编辑部   
 本系统由北京博思汇文数字科技有限公司设计开发 技术服务电话:13520358590

;