Roles of root plasticity to growth, water uptake and yield of quinoa under water regimes

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
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Doi: 10.1007/s42535-022-00495-z
First Page: 980
Last Page: 988
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Keywords: Soil water regimes, Quinoa, Root plasticity


Recent studies indicated new perspectives on the morphology and architecture of the quinoa root system, its intraspecific diversity and plasticity in response to drought. This study therefore aimed to evaluate wherether promoted development of root system due to the plasticity triggered by drought stress would contribute to increased growth, and yield of quinoa. The experiment was conducted with randomized complete block design with 6 replications. The main plots were Green (G1) and Red (G2) varieties and sub-plots were three soil moisture contents (SMC, w/w): 30% (W1) as control, 20% SMC (W2), and 15% SMC (W3). The results showed that the growth of varieties was significantly affected by the different soil water regimes. The root traits such as total root length, total nodal root length, total lateral root length, and nodal root numbers under drought treatments (W2 and W3) were significantly higher as compared with those under control. Furthermore, the root plasticity was expressed in both G1, G2 varieties, which resulted in significantly increased water use, shoot dry matter, and consequently increased yield and yield components. In addition, the positive and significant relationships were observed among measured traits (total root length and water uptake, water uptake and shoot dry weight, and shoot dry weight and yield) of two varieties under different water regimes. These results proved that in both varieties, root plasticity was triggered by drought, which enhanced root systems development contributing to increased water uptake, shoot dry weight and yield.

Soil water regimes, Quinoa, Root plasticity

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Author Information

Nguyen Thi Ngoc Dinh
Department of Experimental Methods and Biostatistics, Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi, Vietnam

Nguyen Hong Hanh
Department of Experimental Methods and Biostatistics, Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi, Vietnam

Nguyen Van Loc
Department of Food Crop Sciences, Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi, Vietnam