Rice (OryzasativaL.) is the
main staple cereal crops for half of the world’s population which is predicted
to exceed 9 billion by the 2050. Rice production needs to be doubled to meet
the future demand of rice eating countries. To ensure the food security of
growing population, sustainable rice production is needed. To achieve the
expected yield, better understanding of the rice root systems will be required.
A panel of rice cultivars, collected from Bangladesh Rice Research Institute
(BRRI) were assessed through two established screening
methods. Deep and shallow rooted cultivars were identified through hydroponic screening and soil filled rhizotron
method. In hydroponic screening method, one way analysis of variance
(ANOVA) revealed 99.13% variation explained by the genotype (P < 0.001). At
the same time, ANOVA revealed 73.37% variation explained by the genotype in
soil filled glass rhizotron method (P < 0.001). When comparing the data of
root traits obtained from hydroponic and rhizotron experiments, 4 cultivars were
identified as deep rooted cultivars, which
would be very promising cultivars for rice breeding programmes in
drought prone regions.
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