Genetic Variation in Response to Salt Stress of Quinoa Grown under Controlled and Field Conditions
Genetic Variation in Response to Salt Stress of Quinoa Grown under Controlled and Field Conditions
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在控制和田间条件下生长的藜麦对盐胁迫反应的遗传变异
DOI：
10.18517/ijaseit.6.2.757
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发表时间：
2016
影响因子：
--
通讯作者：
N. Long
中科院分区：
文献类型：
--
作者：
N. Long
本研究的目的是了解藜麦基因型对不同盐度胁迫条件（例如在受控（网舍）和不同盐田中）的响应变化。盆栽试验于春耕季节在越南河内越南国立农业大学的网房进行，旨在表征四种 NaCl 浓度（0、10、20 和 30 dS m -1 ）下六种藜麦基因型的生长和产量。与此同时，在越南北部受海水入侵影响最严重的两个沿海省份南定省和海防省，在两种植物密度（20 x 5厘米和50 x 5厘米）下对相同的基因型进行了研究。结果表明，盐胁迫降低了藜麦植物的生长和产量特性，并因盐分条件的不同而变化。盐田下种植的藜麦植物密度与形态性状的差异无关，但可能与产量特性的变化有关。盐胁迫降低了所有藜麦基因型的株高、主茎叶数、植株分枝数、头圆锥花序长度、每圆锥花序的分枝数、干物质积累、千粒重、个体和籽粒产量。然而，即使在田间高盐条件下，大多数藜麦基因型也能产生可接受的产量。在藜麦基因型中，Moradas和Verde对盐胁迫条件的适应能力较好，主茎叶数、植株分枝数、干物质积累和产量均高于其他基因型。这些应成为越南盐碱地区种植的推荐品种，并有助于改善耐盐藜麦品种育种计划的遗传资源。
The objective of this study was to understand the change in response of quinoa genotypes to divers salinity stress conditions e.g in controlled (net-house) and in the different saline fields. The pot experiment was conducted in a net-house at Vietnam National University of Agriculture, Hanoi, Vietnam in spring cropping season to characterize the growth and yield of six quinoa genotypes under four NaCl concentrations (0, 10, 20 and 30 dS m -1 ). At the same time, in Nam Dinh and Hai Phong provinces, two coastal provinces that are most affected by seawater intrusion in the North of Vietnam, same genotypes were studied under two plant densities (20 x 5cm and 50 x 5cm). The results showed that salinity stresses reduced growth and yield characteristics of quinoa plant and varying due to different saline conditions. Plant density of quinoa grown under saline fields was not associated with difference in morphological traits but might relate to the change in yield characteristics. Salinity stresses reduced plant height, the number of leaves on main stem, the number of branches on plant, head panicle length, the number of branches per panicle, dry matter accumulation, 1000-seed weight, individual and grain yield of all quinoa genotypes. However, most of quinoa genotypes produced acceptable yield even under high salt conditions in the field. Among quinoa genotypes, Moradas and Verde adapted well to salt stress conditions with high potential for the number of leaves on main stem, the number of branches on plant, dry matter accumulation and yield than others. These should be recommended varieties for cultivation in saline areas in Vietnam as well as be useful to improve genetic resources in breeding program for salt tolerant quinoa varieties.
影响因子：
5.6
作者：
Bonales-Alatorre E;Pottosin I;Shabala L;Chen ZH;Zeng F;Jacobsen SE;Shabala S
通讯作者：
Shabala S