热带作物学报2017，Vol.38Issue(6)：1028-1034,7.DOI:10.3969/j.issn.1000-2561.2017.06.008
烟属野生种主要植物学性状及黑胫病抗性评价
Analysis on Morphological Characterizations and Black Shank Disease Resistance for Genus Nicotiana
摘要
Abstract
The morphological variation of 66 Nicotiara accessions from 50 species were assessed based on 7 morphological traits.The leaf nicotine and potassium concentration of fresh tobacco leaf by kill-enzyme torrefaction method were measured.The evaluation of the accessions for their resistance to Phytophthora parasitica var.nicotianae (race 0 and race1) was conducted.The results showed that the days from sowing to flower (DF) were observed from 35.00 to 357.00 d with an average of 121.67 d.The 1000-seed weight (TSW) varied from 0.02 to 0.20 g with an average of 0.09 g.The plant height (PH) ranged from 11.20 to 292.75 cm with an average of 119.19 cm.The corolla length (CL) ranged from 1.22 to 11.50 cm with an average of 3.98 cm.The corolla diameter (CD) varied from 0.67 to 7.80 cm with an average of 2.37 cm.The maximum leave length (MLL) varied from 6.79 to 61.15 cm with an average of 25.17 cm,while the maximum leave width (MLW) varied from 0.65 to 35.51 cm with an average of 11.84cm.The leaf nicotine concentration was measured from 0.03％ to 1.81％ with an average of 0.92％,potassium concentration measured from 0.32％ to 7.11％ with an average of 3.56％.Eleven wild tobacco accessions were resistant to black shank race 0 and race 1 after black shank disease inoculation.This work provided an important contribution to help breeders in the future on the direction of interspecific crossing attempts.关键词
烟属植物资源/植物学性状/黑胫病抗性Key words
Genus Nicotiana/morphological trait/black shank分类
农业科技引用本文复制引用
何彬,杨志新,方敦煌,李勇,陈学军..烟属野生种主要植物学性状及黑胫病抗性评价[J].热带作物学报,2017,38(6):1028-1034,7.基金项目
中国烟草总公司及中国烟草总公司云南省公司科技项目(No.110201302005、No.2013YN09). （No.110201302005、No.2013YN09）
