All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Relative Articles

More...

Crescimento inicial de Piptadenia stipulacea (Benth.) Ducke (Mimosaceae) e Anadenanthera colubrina (Vell.) Brenan var. cebil (Griseb.) Altshul (Mimosaceae) sob diferentes níveis de sombreamento

DOI: 10.1590/S0102-33062012000200016

Keywords: biomass, chlorophyll, light-demanding, shade-tolerant.

Full-Text   Cite this paper   Add to My Lib

Abstract:

this study aimed to verify how morpho-physiological characteristics differ between species of the caatinga with different light requirements for initial growth, and had the hypothesis that p. stipulacea is light-demanding and a. colubrina is shade-tolerant in the early stages of life. we conducted a randomized block experiment in which seedlings of both species were subjected to treatments of full sun, 50%, 70% and 90% shade for six months. we evaluated morphological (height, diameter, number of leaves and biomass allocation) and physiological (a, b and total chlorophyll content, and ratio of chlorophyll a/b) features. the results showed that these species have different light requirements during early growth. seedlings of p. stipulacea showed a higher relative growth rate and larger diameter when growing in full sun, and a lower root/shoot ratio and lower total chlorophyll content when compared to seedlings of a. colubrina. the best results were for p. stipulacea in full sun and a. colubrina at intermediate levels of shade, which corroborate the hypothesis of this work and are consistent with where each species grows.

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413