Morphological variation of Solanum elaeagnifolium in south-eastern Australia

被引：10
作者：
Zhu, X. C. [1 ,2 ]
Wu, H. W. [1 ,3 ]
Stanton, R. [1 ,2 ]
Burrows, G. E. [1 ,2 ]
Lemerle, D. [1 ,2 ]
Raman, H. [1 ,3 ]
机构：
[1] EH Graham Ctr Agr Innovat, Wagga Wagga, NSW, Australia
[2] Charles Sturt Univ, Sch Agr & Wine Sci, Wagga Wagga, NSW 2678, Australia
[3] Wagga Wagga Agr Inst, PMB, Wagga Wagga, NSW, Australia
来源：
WEED RESEARCH | 2013年 / 53卷 / 05期
关键词：
invasive weed; growth; silverleaf nightshade; size variability; stomata; trichomes; LEAF TRICHOMES; WEED; POPULATIONS; EGGPLANTS; EVOLUTION; SIZE;
D O I：
10.1111/wre.12032
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Solanum elaeagnifolium (silverleaf nightshade) is an invasive perennial weed in Australia, with aerial growth commencing in spring from either the perennial root system or the soil seedbank, with senescence occurring in autumn. A total of 642 S.elaeagnifolium individuals were collected at flowering from 92 locations in south-eastern Australia to study morphological variation and its implications for management. Large morphological variation was found between individuals from different locations. Leaf length, width and area ranged from 1.44 to 10.6cm, 0.39 to 4.09cm and 0.41 to 25.8cm(2) respectively. Plants from higher rainfall regions were significantly taller and had larger leaves, suggesting a possible correlation between rainfall and morphology. Scanning electron microscopy comparison of leaf surfaces showed lower trichome and stomatal densities on the adaxial surface (67.0 +/- 3.3trichomesmm(-2) and 603.4 +/- 29.2stomatamm(-2) respectively) than on the abaxial surface (131.9 +/- 7.2trichomesmm(-2) and 813.7 +/- 30.5stomatamm(-2) respectively). The morphological plasticity of S.elaeagnifolium highlighted in this study could probably contribute to its adaptability and partly explain its establishment and continuing expansion in Australia.
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页码：344 / 354
页数：11
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