摘要
为研究UV-B辐射对烤烟形态的影响,分析了大田不同减弱UV-B辐射(T1,75.74%;T2,70.08%;T3,30.39%)条件下烤烟品种NC297株高、茎围、节距和第7、11、15叶位的叶长、叶宽和叶面积的差异。采用同异分析法分析了不同UV-B辐射下NC297的综合形态特征,并与灰色关联度分析法进行了对比。结果表明,减弱UV-B辐射增加了NC297株高和节距,且T2>T3>T1,而T3茎围显著降低。第7叶位受UV-B辐射影响较大,其中叶长和叶面积以T2和T3增加明显,叶宽以T2增加明显,而第11叶位仅T2和T3叶长增加显著,而UV-B辐射对其叶宽、叶面积以及第15叶没有显著影响。同异分析和灰色关联度分析均表明,减弱UV-B辐射对烤烟形态的综合影响呈非线性特征,在UV-B辐射强度较大时,烤烟形态对UV-B辐射的变化响应较灵敏。同异分析法计算结果可靠,而且计算过程较灰色关联度分析法简便,可用于烤烟形态特征的综合评价。
Stem height, girth, internode distance and leaf length, width and area of the 7th, 1 l＇hand 15thleaves in dif- ferent reduced UV-B radiation conditions （T1, 75.74% ; T2, 70.08% and T3, 30.39% ） in field were investigated to determine effects of reduced UV-B radiation on morphological characteristics of flue-cured tobacco NC297. Comprehen- sive characteristics was analyzed with identical and difference analysis （IDA） and compared with grey relation analysis （GRA）. Results showed that reduced UV-B radiation increased stem height and internode distance of NC297 with T2 〉 T3 〉 T~, but significantly reduced stem girth with T3. The 7＇hleaf was affected comparatively larger than the others. Leaf length and area were increased with T2 and T3 as well as leaf width increased significantly with T2. Leaf length of the 11 th leaf was increased with T2 and T3. However, leaf width and leaf area of the 11 thleaf and all characteristics of the 15＇hleaf were not significantly affected by UV-B radiation. Both results of IDA and GRA showed that comprehensive effect of re- duced UV-B radiation on morphology of flue-cured tobacco was non-linear. The morphology was more sensitive to UV-B radiation with higher intensity UV-B. Result of IDA was reliable, and the calculation was more simple and convenient than GRA. Therefore, it can be used for comprehensive evaluation of flue-cured tobacco morphology.
出处
《中国烟草学报》
EI
CAS
CSCD
2011年第6期43-47,共5页
Acta Tabacaria Sinica
关键词
减弱UV-B辐射
烤烟
形态特征
同异分析
综合评价
reduced UV-B radiation
flue-cured tobacco
morphological characteristic
identical and difference analy-sis
comprehensive evaluation
