烤烟δ13C值及碳氮代谢对增强UV-B辐射的响应

doi:10.11924/j.issn.1000-6850.2014-0682

中国农学通报 ›› 2014, Vol. 30 ›› Issue (31): 64-70.doi: 10.11924/j.issn.1000-6850.2014-0682

所属专题：烟草种植与生产

烤烟δ¹³C值及碳氮代谢对增强UV-B辐射的响应

杨湉,杨金汉,陈宗瑜,谭淑文,王娟

云南农业大学农学与生物技术学院,云南农业大学农学与生物技术学院,云南农业大学农学与生物技术学院,云南农业大学农学与生物技术学院,云南农业大学农学与生物技术学院

收稿日期:2014-03-14 修回日期:2014-03-14 接受日期:2014-09-05 出版日期:2014-11-20 发布日期:2014-11-20
通讯作者: 陈宗瑜
基金资助:
国家烟草专卖局项目“清香型特色优质烟叶开发”(110201101003TS-03)

Response of tobacco δ¹³C value and carbon-nitrogen metabolism to increased UV-B radiation

Jinhan Yang,Zongyu Chen, and

Received:2014-03-14 Revised:2014-03-14 Accepted:2014-09-05 Online:2014-11-20 Published:2014-11-20

摘要/Abstract

摘要： 为研究增强UV-B辐射对烤烟叶位δ¹³C值、碳氮代谢及烟叶化学成分的影响，以烤烟品种‘K326’为试验材料，在云南省玉溪市红塔区赵桅试验基地（24°18′N，102°29′E，海拔1645 m）进行大田增强UVB辐射强度试验。研究了增强不同UV-B辐射强度处理对烤烟13和16叶位烟叶δ¹³C值、碳氮代谢和化学成分的影响。结果表明：13叶位不同处理δ¹³C值的变化范围在-26.77‰~-25.16‰，16叶位δ¹³C值变化范围在-26.00‰~-24.99‰。自然环境条件下UV-B辐射实测值和烟叶δ¹³C值变化趋势，表现为随UV-B辐射增强烟叶δ¹³C值减小。其中T1总碳含量明显减小，其余处理总碳含量变化不大，说明适当增强的UV-B辐射对烟叶的总碳含量积累有利。而全氮含量表现为随紫外辐射的增强，其含量增加的趋势，尤以T2处理全氮含量增加最明显，即UV-B辐射与全氮呈显著正相关(P＜0.05)，与碳氮比呈显著负相关(P＜0.05)。对2个叶位化学成分进行评分，得分情况为T2＞T1＞T3＞CK，总体评价T2处理的化学成分协调性最好。相关分析结果亦表明，UV-B辐射与烟碱、全氮、钾呈正相关，与总糖、还原糖、氯呈负相关，其中与还原糖呈显著负相关(P＜0.05)。

关键词: 吞噬作用, 吞噬作用

Abstract: The paper aims to study the effect of enhanced UV- B radiation on δ¹³C value, carbon- nitrogen metabolism and chemical composition of tobacco leaf. Flue-cured tobacco variety‘K326’was taken as test material for enhanced UV-B radiation in field experiment in Zhaowei experimental base of Hongta District, Yuxi Prefecture, Yunnan Province. The results showed that 13 leaf position had a range of δ¹³C values of -26.77‰~-25.16‰under different treatments and 16 leaf position had a range of δ¹³C values of -26.00‰~ -24.99‰. In the natural environment, the measured value of UV-B radiation and the changed trend value of δ¹³C results indicated that the tobacco δ¹³C values decreased with UV-B radiation enhancing. Except the total carbon content of T1 reduced obviously, the rest of the total carbon content changed little. Total nitrogen content increased with ultraviolet radiation, especially obvious in T2. The UV-B radiation and total nitrogen content were significantly positive correlated (P＜0.05), and the UV-B radiation and carbon-nitrogen ratio had significant negative correlation (P＜0.05). The chemical compositions of the two leaf positions were scored as T2＞T1＞T3＞CK, and T2 had the best chemical composition coordination in the overall evaluation. Correlation analysis result showed that UV-B radiation was positively correlated with nicotine, total nitrogen and potassium, while negatively correlated with the total sugar, reduced sugar and chlorine, and had significantly negative correlation with reduced sugar (P＜0.05).

杨湉,杨金汉,陈宗瑜,谭淑文,王娟. 烤烟δ¹³C值及碳氮代谢对增强UV-B辐射的响应[J]. 中国农学通报, 2014, 30(31): 64-70.

Jinhan Yang,Zongyu Chen, and . Response of tobacco δ¹³C value and carbon-nitrogen metabolism to increased UV-B radiation[J]. Chinese Agricultural Science Bulletin, 2014, 30(31): 64-70.

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烤烟δ¹³C值及碳氮代谢对增强UV-B辐射的响应

Response of tobacco δ¹³C value and carbon-nitrogen metabolism to increased UV-B radiation

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