Correlation among agro-morphological variation and genetic diversity of rice (Oryza sativa L.) under drought stress

• Autorzy: Thu Ha P.T. , Khang D.T. , Tuyen P.T. , Minh L.T. , Minh T.N. , Thi Lang N. , Buu B.C. , Xuan T.D.
• Języki publikacji: EN

Abstrakty

EN

In this study, the correlation coefficients among agro-morphological variation, genetic diversity, and drought tolerance in 44 rice cultivars were analyzed. The drought tolerance at seeding stage (DTS) was significantly proportional to drought tolerance at vegetative stage (DTV) (r = 0.60). In addition, DTS and DTV had strong significant positive correlation to leaf roll (r = 0.87 and 0.54, respectively). Means of unfilled grains and tilling per panicle were proportionally correlated to DTS (r = 0.22 and 0.25, respectively), and DTV (r = 0.20 and 0.36, respectively). However, weight of 1000 grains and filled grains were recorded no correlation to DTS and DTV. At a homologous coefficient of 16.85 integrated from cluster analysis of agro-morphological, quantitative characteristics and drought tolerant scores, the rice cultivars were divided into five groups. Maximum polymorphic information content (PIC) values were detected in three markers including RM11125, RM21, and RM5629, which were from 0.78 to 0.79. Cluster analysis of microsatellite markers revealed that by a genetic distance of 0.63, the rice varieties were separated into three clusters. The results provide valuable information for rice breeders to select donors in breeding rice integrated with drought tolerance and good agronomic characteristics.

Słowa kluczowe

EN

rice; Oryza sativa; rice cultivar; plant productivity; agronomic trait; morphological variation; genetic diversity; drought stress; drought resistance; cluster analysis; microsatellite marker; correlation coefficient

• Wydawca: -
• Czasopismo: International Letters of Natural Sciences
• Rocznik: 2016
• Tom: 58
• Opis fizyczny: p.42-53,fig.,ref.

Twórcy

autor

Thu Ha P.T.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan
• Cuu Long Delta Rice Research Institute, Thoi Lai, Can Tho, Vietnam

autor

Khang D.T.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan

autor

Tuyen P.T.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan

autor

Minh L.T.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan

autor

Minh T.N.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan

autor

Thi Lang N.

• Cuu Long Delta Rice Research Institute, Thoi Lai, Can Tho, Vietnam

autor

Buu B.C.

• Institute of Agricultural Sciences for Southern Vietnam (IAS), Vietnam

autor

Xuan T.D.

• Graduate School for International Development and Cooperation (IDEC), Hiroshima University, 739-8529, Japan

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Identyfikatory

DOI

10.18052/www.scipress.com/ILNS.58.42