Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1071/BT14124 |
Comparative developmental anatomy of the taproot of the cucurbitaceous vines Citrullus colocynthis (perennial), Citrullus lanatus (annual) and Cucumis myriocarpus (annual) | |
Burrows, Geoffrey E.1,2; Shaik, Razia S.1,2 | |
通讯作者 | Burrows, Geoffrey E. |
来源期刊 | AUSTRALIAN JOURNAL OF BOTANY
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ISSN | 0067-1924 |
EISSN | 1444-9862 |
出版年 | 2014 |
卷号 | 62期号:7页码:537-545 |
英文摘要 | The genus Citrullus (Cucurbitaceae) consists of four species of desert vines. Two species (Citrullus colocynthis and Citrullus lanatus) are widespread weeds on several continents. Above ground, they can be relatively difficult to distinguish apart. However, Citrullus colocynthis is a perennial with a tuberous taproot, whereas Citrullus lanatus is an annual with a slender taproot. We studied the morphology and anatomy of taproot development to better understand their structural and ecological differences. The annual Citrullus lanatus reached close to its maximum taproot diameter (similar to 3mm) soon after germination. The vascular cambium formed four relatively broad triangular sectors of fibres in which were embedded relatively large diameter vessels. These sectors were separated by narrower triangular areas of secondary ray parenchyma. In contrast, the taproot diameter of the perennial Citrullus colocynthis continued to increase during the study, reaching similar to 20mm after 14 weeks. Most of this substantial root consisted of secondary xylem parenchyma, with a low density of relatively small diameter vessels and few fibres. The remarkable differences in root morphology and anatomy of the studied species of Citrullus are related to differences in their annual and perennial lifecycles. Interestingly, the slender taproots of Citrullus lanatus were calculated to have a similar theoretical hydraulic conductance to that of Citrullus colocynthis (large diameter taproot). |
英文关键词 | camel melon colocynth cucurbit Cucurbitaceae morphology periderm phellem paddy melon root anatomy tuberous root vessel |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000349994100001 |
WOS关键词 | GROWTH FORMS ; EVOLUTION ; SCHRAD ; LIANAS ; STEM |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/181004 |
作者单位 | 1.NSW Dept Primary Ind, Graham Ctr Agr Innovat, Wagga Wagga, NSW 2678, Australia; 2.Charles Sturt Univ, Sch Agr & Wine Sci, Wagga Wagga, NSW 2678, Australia |
推荐引用方式 GB/T 7714 | Burrows, Geoffrey E.,Shaik, Razia S.. Comparative developmental anatomy of the taproot of the cucurbitaceous vines Citrullus colocynthis (perennial), Citrullus lanatus (annual) and Cucumis myriocarpus (annual)[J],2014,62(7):537-545. |
APA | Burrows, Geoffrey E.,&Shaik, Razia S..(2014).Comparative developmental anatomy of the taproot of the cucurbitaceous vines Citrullus colocynthis (perennial), Citrullus lanatus (annual) and Cucumis myriocarpus (annual).AUSTRALIAN JOURNAL OF BOTANY,62(7),537-545. |
MLA | Burrows, Geoffrey E.,et al."Comparative developmental anatomy of the taproot of the cucurbitaceous vines Citrullus colocynthis (perennial), Citrullus lanatus (annual) and Cucumis myriocarpus (annual)".AUSTRALIAN JOURNAL OF BOTANY 62.7(2014):537-545. |
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