Full Length Research Paper
Abstract
This study aimed to evaluate the effect of spectral light quality on different anatomical features of banana tree plantlets grown under coloured shade nets. Banana plants of five genotypes (Maçã, Thap Maeo, Caipira, BRS Platina and Princesa), obtained from micropropagation, were grown under white, blue, red and black nets, with shade of 50%, in a completely randomized design. After 90 days of acclimatization under nets, the leaves were collected and analyzed anatomically following basic protocol of plant microtechnique. Cultivation under white net provided greater thickness of epidermis cells, hypodermis on the adaxial face and palisade parenchyma; and greater stomatal density on the adaxial face; both the red and white nets, however, increased stomatal density on the abaxial face. The use of white net, during the acclimatization phase, is recommended for cultivation of banana plantlets obtained of micropropagation.
Key words: Musa sp., acclimatization, spectral quality, anatomical plasticity.
Abbreviation
Abbreviations: AdE, Epidermis on the adaxial face; AbE, epidermis on the abaxial face; AdH, hypodermis of the adaxial face; AbH, hypodermis of the abaxial face; PP, palisade parenchyma; SP, spongy parenchyma; MR, midrib; AdD, stomatal density of the adaxial face; AbD, stomatal density of the abaxial face; PD/ED Ad, polar diameter/equatorial diameter ratio of stomata on the adaxial; PD/ED Ab, abaxial faces.
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