论文部分内容阅读
以相同栽培条件下的10个烤烟品种为试验材料,在光学显微镜下对烤烟腺毛的数量和分布进行了统计分析。结果表明,长柄腺毛是烤烟叶片中的优势腺毛,在腺毛总体中的比例(69.5%~90.5%)远高于短柄腺毛(9.5%~30.5%),对叶片腺毛总体密度的影响最大,而短柄腺毛因数量稳定也能反映品种特征。烤烟上、下表皮的腺毛密度差异极显著(F=41.053,P<0.01),下表皮的腺毛密度较大,其变异系数(0.14)和全表皮腺毛密度一致,更能反映出品种的腺毛密度特征;短柄腺毛的密度除K326和‘吉烟7号’外都是上表皮密度大于下表皮,差异显著(F=6.466,P<0.05),反映出上表皮的腺毛发育较早。按照全表皮的腺毛密度平均值10个品种的排列顺序是:吉烟7号>中烟90>K346>87414>云烟85>8021>NC82>G28>RG11>K326,烤烟腺毛密度特征具有品种差异,但受环境条件影响较大,可做为局部地区内的烤烟品种筛选指标之一。
Ten flue-cured tobacco varieties under the same cultivation conditions were used as experimental materials, and the numbers and distributions of glandular hairs were analyzed under a light microscope. The results showed that long-handled glandular hairs were the predominant glandular hairs in flue-cured tobacco leaves, and the proportion of glandular trichomes in flue-cured tobacco leaves was much higher (69.5% -90.5%) than that of short-handled glandular trichomes (9.5% -30.5%). The density of the greatest impact, while the short-stem gland hair due to the number of stable varieties can also reflect the characteristics. The density of glandular hairs in the upper and lower epidermis of flue-cured tobacco was significantly different (F = 41.053, P <0.01), the density of glandular trichomes in the lower epidermis was larger, the coefficient of variation (0.14) was consistent with the density of all epidermal glands, The density of short-stemmed glandular hairs was higher than that of the lower epidermis except K326 and ’Ji-Yan7’ (F = 6.466, P <0.05), indicating that the glandular hair of the epidermis Earlier development. According to the average epidermal glandular hair density, the order of 10 varieties was: Jianyan 7> Zhongyan 90> K346> 87414> Yunyan 85> 8021> NC82> G28> RG11> K326, But it is greatly affected by environmental conditions and can be used as one of the screening index of flue-cured tobacco varieties in some areas.