Malaysian Applied Biology Journal

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48_03_20

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Malays. Appl. Biol. (2019) 48(3): 181–188

 

LEAF ANATOMICAL RESPONSES TO DROUGHT STRESS

CONDITION IN HYBRID SUGARCANE LEAF

(Saccharum officinarum ‘KK3’)


WORASITIKULYA TARATIMA1*, THAPAKORN RITMAHA1, NUNTAWOOT JONGRUNGKLANG2,

SAYAM RASO3 and PITAKPONG MANEERATTANARUNGROJ4


1Salt Tolerance Rice Research Group, Department of Biology, Faculty of Science,

Khon Kaen University, Khon Kaen 40002, Thailand

2Northeast Thailand Cane and Sugar Research Center, Faculty of Agriculture,

Khon Kaen University, Khon Kaen 40002, Thailand

3Department of Fundamental Science, Faculty of Science and Technology,

Surindra Rajabhat University, Surin 32000, Thailand

4Faculty of Veterinary Science, Khon Kaen University, Khon Kaen 40002, Thailand

*E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Accepted 3 March 2019, Published online 30 June 2019


ABSTRACT

Comparative leaf anatomy of sugarcane (Saccharum officinarum ‘KK3’) was investigated under early drought stress condition between 30-90 days of planting. Forty anatomical characteristics were studied using a light microscope with significance evaluated by numerical analysis. Results indicated that some anatomical features of sugarcane leaf responded to drought stress. Almost all the anatomical characteristics of unstressed treatments showed higher values than stressed treatments. A total of 21 out of the 40 characteristics showed a significant difference. Leaf thickness, stomatal size and interstomatal adaxial epidermal cell size of treated plants decreased while cuticle thickness of adaxial lamina and stomatal density significantly increased. This is the first report detailing leaf anatomy response to drought stress conditions in Thailand of sugarcane (S. officinarum ‘KK3’). Results will provide useful basic knowledge for a better understanding of the adaptation mechanisms of tolerant sugarcane genotypes under early drought stress conditions.


Key words: sugarcane, leaf anatomy, adaptation, drought stress

 

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