| 烟草含钾量的基因型差异及钾高效品种筛选 |
| |
| 引用本文： | 杨欢,王勇,李廷轩,郑传刚,陈光登.烟草含钾量的基因型差异及钾高效品种筛选[J].植物营养与肥料学报,2017,23(2):451-459. |
| |
| 作者姓名： | 杨欢 王勇 李廷轩 郑传刚 陈光登 |
| |
| 作者单位： | 1.四川农业大学资源学院，四川成都 611130 |
| |
| 基金项目： | 四川省教育厅重点项目(14ZA0002)，四川省烟草公司凉山州公司科技项目(2011) |
| |
| 摘 要： | 【目的】高含钾量是优质烟叶的一项重要指标。比较不同烟草品种的含钾量及其对施用钾肥的反应，为筛选高钾基因型烟草品种提供基础。【方法】以 93 份烟草种质资源为研究对象，在凉山州进行连续两年的大田试验。设置常规钾 (K2O = 300 kg/hm2) 与低钾 (K2O = 150 kg/hm2) 两个水平，成熟期测定烟叶含钾量，以聚类分析将烟草分类，并分析其在不同叶位间的基因型差异。【结果】施钾量影响烟草上、中、下部叶片钾含量，常规钾水平下的烟叶含钾量高于低钾水平，常规施钾量下的上、中、下部烟叶含钾量分别为低钾水平下的 1.13、1.14、1.15 倍 (2014 年) 和 1.10、1.25、1.35 倍 (2015 年) 。将烟叶含钾量进行聚类分析，供试材料被划分为高钾型、普通型和低钾型 3 类，并筛选获得了典型材料。高钾型烟草的上、中、下部烟叶含钾量均显著高于普通型及低钾型烟草材料。常规施钾水平下，高钾型烟草的上、中、下部烟叶含钾量分别是低钾型的 1.50～1.92、1.54～2.52、1.31～2.36 倍；低钾水平下分别为 1.27～1.93、1.66～2.24、1.72～1.73 倍。【结论】高钾基因型烟草上、中、下部烟叶的含钾量均显著高于普通型和低钾型；普通型上部叶的含钾量与低钾型烟草之间无显著差异，中、下部烟叶含钾量普通型显著高于低钾基因型。通过两年田间试验筛选获得了 6 份高钾型烟草材料，包括嘎吉红大、长叶红大、达白 1 号、达白 2 号、MFZS、930032-7，可应用于烟叶生产，亦可为富钾基因型品种选育提供育种亲本材料。
|
| 关 键 词： | 烟草 含钾量 基因型差异 筛选 |
| 收稿时间： | 2016-03-15 |
Genotype differences in potassium contents of tobacco and screening of tobacco cultivars with high K efficiency |
| |
| YANG Huan,WANG Yong,LI Ting-xuan,ZHENG Chuan-gang,CHEN Guang-deng.Genotype differences in potassium contents of tobacco and screening of tobacco cultivars with high K efficiency[J].Plant Nutrition and Fertilizer Science,2017,23(2):451-459. |
| |
| Authors: | YANG Huan WANG Yong LI Ting-xuan ZHENG Chuan-gang CHEN Guang-deng |
| |
| Institution: | 1.College of Resource Sciences, Sichuan Agricultural University, Chengdu 611130, China |
| |
| Abstract: | Objectives] Potassium content is one of the most important indexes of tobacco quality.Investigation on the K contents of tobacco cultivars will help screen K-efficient tobacco genotype.Methods] Field experiments were carried out for 2 years (2014-2015) in the main tobacco producing region of Xichang City,Sichuan Province.93 tobacco germplasm resources were collected and grown under normal and reduced K application rates (K2O 300 and 150 kg/hm2).The K contents of upper,middle and lower parts of leaves of tobacco were analyzed,and the genotypes were grouped into high,middle and low K-efficiency using clustering analysis method.Results] The K contents of the 93 germplasm resources were significantly different under the two K application rates,and the K contents under the normal K rate were significantly higher than those under the reduced K rate.The average K contents of the upper,middle and lower parts of leaves under the normal K rate were 1.13,1.14 and 1.15 times of those under the reduced K rate in 2014,respectively,and were 1.10,1.25 and 1.35 times in 2015.According to the K contents in leaves,the tested 93 genotypes were classified into high,common and low K content genotypes.The leaf K contents in the upper,middle and lower parts of tobacco with high-K efficiency were all higher than those of the other two genotypes.The K contents in the upper,middle and lower part of leaves of the high K content genotypes were respectively 1.50-1.92,1.54-2.52,1.31-2.36 (under the normal K application rate) and 1.27-1.93,1.66-2.24,1.72-1.73 (under the low K application rate) times of those of the low K content genotypes.Conclusions] The high K content genotype materials selected in the two-consecutive-year experiment including Gajihongda,Changyehongda,Dabai 1,Dabai 2,MFZS and 930032-7 could be applied to the tobacco production and provided as parent materials for potassium-enriched tobacco breeding operation. |
| |
| Keywords: | tobacco K content genotypic variation screening |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《植物营养与肥料学报》浏览原始摘要信息 |
| 点击此处可从《植物营养与肥料学报》下载免费的PDF全文 |
|
