Abstract
The acid soil area covers major topics land where Iron (Fe) toxicity is one of a limiting
factor for rice production which can be overcome by planting the tolerant variety. The
information of morpho-physiological characters and the genetic variation of tolerant
genotypes is very important. Here we study the variation of root and shoot growth as
well as physiological responses to iron toxicity between ten rice genotypes under
hydroponic conditions with agar addition. Growth parameters, leaf bronzing score, Fe
content in the shoot and root plaques, total chlorophyll, carotenoids, and
malondialdehyde (MDA) were observed in this study. Based on morpho-physiological
data related to iron toxicity, ten rice genotypes were clustered into three groups which
the best performance genotypes were Pokkali and Hawara Bunar. Leaf bronzing score
showed correlated with Fe content in the shoot, but tolerant and sensitive genotypes
could be differentiate based on this character because it showed non significant Fe
content between those two groups. Our study found that the pattern in morphophysiological characters variation could be useful for selection of desirable genotypes
for Fe tolerant rice.
Turhadi Turhadi, Hamim Hamim, Munif Ghulamahdi, Miftahudin Miftahudin. (2018) Morpho-physiological responses of rice genotypes and its clustering under hydroponic iron toxicity conditions, Asian Journal of Agriculture and Biology, Volume 6, Issue 4.
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