| 不同木薯叶营养成分对饲养木薯蚕的影响 |
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| 引用本文： | 曹萌萌,杨龙,陈松笔,安飞飞.不同木薯叶营养成分对饲养木薯蚕的影响[J].南方农业学报,2022,53(6):1759-1767. |
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| 作者姓名： | 曹萌萌 杨龙 陈松笔 安飞飞 |
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| 作者单位： | 1. 中国热带农业科学院热带作物品种资源研究所/农业农村部木薯种质资源保护与利用重点实验室, 海南海口 571101;2. 南京农业大学农学院, 江苏南京 210000;3. 贵州省亚热带作物研究所, 贵州兴义 562400 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项(17CXTD-29)贵州省科技支撑项目(黔科合支撑[2019]2358号)国家重点研发计划项目(2019YFD1000500) |
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| 摘 要： | 【目的】结合营养成分揭示不同木薯叶饲养对木薯蚕生长发育及其蚕丝纤维形态结构的影响，筛选出适宜饲养木薯蚕的木薯品种，为木薯叶饲用化提供参考依据。【方法】选用华南9号（SC9）木薯、花叶木薯、无叶柄木薯和紫叶木薯4种不同基因型木薯叶作为研究材料，以蓖麻叶为对照，分别测定叶片的可溶性糖、粗蛋白、干物率、氢氰酸、总类胡萝卜素、...
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| 关 键 词： | 木薯蚕 木薯叶 营养成分 生长发育 蚕丝 |
| 收稿时间： | 2021-07-05 |
Effects of cassava leaves'nutrient components on eri-silkworm breeding |
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| CAO Meng-meng,YANG Long,CHEN Song-bi,AN Fei-fei.Effects of cassava leaves'nutrient components on eri-silkworm breeding[J].Journal of Southern Agriculture,2022,53(6):1759-1767. |
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| Authors: | CAO Meng-meng YANG Long CHEN Song-bi AN Fei-fei |
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| Institution: | 1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Conservation and Utilization of Cassava Genetic Resources, Ministry of Agriculture and Rural Affairs, Haikou, Hainan 571101, China;2. College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu 210000, China;3. Subtropical Crops Research Institute of Guizhou, Xingyi, Guizhou 562400, China |
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| Abstract: | 【Objective】 To reveal the effects of feeding different cassava leaves to eri-silkworms on their growth，development and morphological structure of their silk fiber for screening cassava varieties suitable for feeding eri-silkworms，so as to provide a reference for cassava feeding.【Method】 Cassava leaves of 4 genotypes，South China 9（SC9），Manibot esculenta cv.Variegata，petiole-free cassava and purple-leaf cassava were used as materials，and castor leaves were taken as control（CK）.Nutritional indexes，soluble sugar，crude protein ，dry matter rate，hydrocyanic acid，total carotenoid，anthocyanin and total flavonoids were determined.Body length，body weight pupa weight and total cocoon weight of fifth instar larvae fed on different cassava leaves were measured and morphological structure of silk was observed by scanning electron microscope.【Result】Contents of total carotenoid，anthocyanin，hydrocyanic acid and dry matter rate in the 4 varieties of cassava leaves were higher than that of castor leaves.Contents of anthocyanin，total flavonoids，dry matter and hydrocyanic acid content in the leaves of purple-leaf cassava were significantly higher than those of 4 other materials（P<0.05，the same below）.Correlation analysis showed that significant correlations existed between carotene and chlorophyll，between carotene and total carotenoids，between total flavonoids and anthocyanin，between soluble sugar and hydrocyanic acid（P<0.01）.Principal component analysis showed that the cumulative contribution rate of the first two principal components was 87.632%；the first principal component was determined by dry matter rate，chlorophyll and soluble sugar；and the second principal component was determined by lutein and crude protein.Cassava leaves of different genotypes had significant effects on the growth and development of eri-silkworm，and they can significantly increase body length of eri-silkworms.The whole cocoon weight of eri-silkworms fed on SC9 and purple-leaf cassava leaves was bigger than that of eri-silkworms fed on castor leaves；the pupa weight and cocooning rate of eri-silkworms fed on purple-leaf cassava leaves were the highest.Silk width of eri-silkworms fed on cassava leaves of 4 genotypes was increased，among which eri-silkworms fed on purple-leaf cassava leaves had the highest silk width and comparatively complete silk surface.【Conclusion】 Difference of nutrient components between castor leaves and cassava leaves of 4 varieties was significant，and cassava leaves feeding can significantly promote the growth of eri-silkworm.Pupa weight of eri-silkworms fed on purple-leaf cassava is the heaviest，with high cocooning rate and complete silk surface.Body weight，body length and whole cocoon weight of eri-silkworms fed on SC9 cassava leaves are the highest，their silk had more impurities.Therefore，leaves of purple-leaf cassava，suitable for feeding eri-silkworms，has great potential to be developed as feed. |
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