Physical-Anatomical and Initial Growth of Tabebuia roseoalba (Ridl.) under Different Water Regimes
Tipo de material:
ArtigoAssunto(s): Recursos online:
Em: Floresta e Ambiente (Brazil) v. 27(1) p. 1-7; (2020)Sumário:
Abstract
The present work evaluated the physical-anatomical and initial growth of Tabebuia roseoalba seedlings exposed
to different water regimes. The seedlings were grown under 100, 50, 25 and 12.5% of the water retention capacity
(WRC). After 90 days, the following aspects were evaluated: height, diameter, fresh and dry weights of aerial and
root, root length, and leaf area, Dickson quality index, liquid assimilation rate, relative growth rate, specific leaf
area, stomatal index, and number of trichomes and leaf epidermal cells. The results indicated seedlings have greater
initial growth and quality when cultivated at 100% WRC, and 25 and 12.5% WRC represented stress conditions for
the plants. The species is hypostomatous with anomocytic stomata. The number of stomata, the stomatal index, and
the number of epidermal cells did diminish with reduced water availability. The number of trichomes were larger
on the adaxial face as water availability decreased.
Keywords: anatomy, seedling production, water stress.
| Tipo de material | Biblioteca atual | Coleção | Número de chamada | Informaçaõ do volume | Situação | Devolução em | Código de barras |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri Agrobase - Periódicos | Periódicos agrícolas | 2020 27(1) | Online | 2025-0455 |
Publicação on-line; 23 ref.; 3 tables; 1 illus.; Summary (En)
Abstract
The present work evaluated the physical-anatomical and initial growth of Tabebuia roseoalba seedlings exposed
to different water regimes. The seedlings were grown under 100, 50, 25 and 12.5% of the water retention capacity
(WRC). After 90 days, the following aspects were evaluated: height, diameter, fresh and dry weights of aerial and
root, root length, and leaf area, Dickson quality index, liquid assimilation rate, relative growth rate, specific leaf
area, stomatal index, and number of trichomes and leaf epidermal cells. The results indicated seedlings have greater
initial growth and quality when cultivated at 100% WRC, and 25 and 12.5% WRC represented stress conditions for
the plants. The species is hypostomatous with anomocytic stomata. The number of stomata, the stomatal index, and
the number of epidermal cells did diminish with reduced water availability. The number of trichomes were larger
on the adaxial face as water availability decreased.
Keywords: anatomy, seedling production, water stress.
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