|
Different patterns of aerenchyma formation in two hygrophytic species of Paspalum (Poaceae) as response to flooding [An article from: Flora] | ![Different patterns of aerenchyma formation in two hygrophytic species of Paspalum (Poaceae) as response to flooding [An article from: Flora]](http://ecx.images-amazon.com/images/I/51Q2495H5TL._SL160_.jpg)
 enlarge | Authors: L.t. Fabbri, G.h. Rua, N. Bartoloni
Publisher: Elsevier
Buy New: $8.95
Format: Html
Media: Digital
| |
| Editorial Reviews:
Product Description
This digital document is a journal article from Flora, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Paspalum modestum and P. wrightii are perennial grasses growing in permanent and seasonally flooded areas, respectively. The former produces short rhizomes and floating culms, the latter forms long rhizomes and erect culms. Variations in percentage aerenchymatous space (PAS) in different organs as a response to flooding was analysed using a clone of each species. Eighteen plantlets of each clone were cultivated during 7 months under flooded vs. unflooded conditions. After this period, roots, rhizomes, culms, and leaf sheaths were collected and prepared. PAS was measured using an image analysis device, and data were analysed using ANOVA. Production of aerenchyma took place in both species within the cortical parenchyma of roots, rhizomes and culms, and the mesophyll of leaf sheaths, both in flooded and unflooded plants. Under flooding conditions PAS increased in both species, although the individual response of organs differed: whereas in P. modestum PAS increased primarily in substratum-fixed roots, in P. wrightii all organs produced additional aerenchyma uniformly. Contrasting responses are understood as adaptations to permanent and seasonal flooding, respectively.
|
|
|
Powered by Associate-O-Matic
| |
top