Association mapping for yield traits under drought stress in Autumn rice germplasm collection of Assam

Mahalle, Mayuri D.; Dey, P. C.; Chetia, S. K.; Baruah, Anubha; Ahmed, Tasneem; Sarma, R. N.; Kaldate, Rahul; Kumar, Amrendra; Singh, Sushil Kumar; Modi, Mahendra Kumar

doi:10.1007/s13562-020-00559-8

Cited by 11 publications

(4 citation statements)

References 32 publications

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“…Much of the initial efforts to improve GYP −1 under drought focused on the improvement of secondary traits such as DF, PHL, PHP, ABP −1 , and HI as studied by Mahalle et al (2020) [45]. In our study, DF came out with the highest broad sense heritability (H 2 ) of 94.59 and 93.83 under lowland and upland conditions one-to-one.…”

Section: Traits Investigated Under Drought Stressmentioning

confidence: 50%

Identification of Drought Tolerance on the Main Agronomic Traits for Rice (Oryza sativa L. ssp. japonica) Germplasm in China

Ahmad

Wang

et al. 2021

Agronomy

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Drought is a major abiotic factor restricting rice yield; therefore, to cope with this stress, 2030 japonica rice accessions from China and other countries were evaluated in Beijing in 2017 and 2018. This was the first time six agronomic traits in the large-scale germplasm of rice under lowland and upland conditions with an augmented randomized complete block design (ARCBD) were analysed. The genotypes revealing drought resistant grade (DRG) scores of 1, 1–3, 3 and 3–5 were considered drought-tolerant and comprised 10% of the assessed germplasm. These findings were consistent with the agglomerative hierarchical cluster (AHC) analysis that classified germplasm in nine clusters. The generated clusters were further grouped in A, B, C and D classes based on the stress response. Approximately half of the genotypes with an upland ecotype were distributed in drought-resistant class A (cluster VII and VI) and moderately resistant class B (VIII and IX). The majority of the genotypes from China, Korea and Japan fall in drought-susceptible classes C and D. Genotypes of DRG 1, 1–3 and 3 belonged to the clusters VII and VI. Finally, we screened out 42 elite genotypes including seven improved upland rice lines (D78, LB37-13, NSU77, Handao 385, Handao 306, SF83 and HF6-65-119), three upland released varieties (Liaogeng 27, Hanfeng 8 and IRAT109) and three traditional lowland cultivars (Hongmaodao, Weiguo 7 and Xiaohongbandao). These genotypes might be used as priority parents in drought-tolerant rice breeding programmes and some of them could be recommended directly to farmers in water-deficient rice areas of China.

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Section: Traits Investigated Under Drought Stressmentioning

confidence: 50%

Identification of Drought Tolerance on the Main Agronomic Traits for Rice (Oryza sativa L. ssp. japonica) Germplasm in China

Ahmad

Wang

et al. 2021

Agronomy

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“…Over the past 50 years, the Earth's temperature has increased by 0.74°C, causing floods, drought, hurricanes/typhoons and high tides. Regarding this, Mahalle, et al [18] reported that rice production lowered to 65% compared to rice cultivated in irrigated areas.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2023

JAC

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Section: Introductionmentioning

confidence: 99%

The Diversity of Agronomic Characteristics of Several Local Aceh Rice Germplasm

Nazirah¹,

Fuady²,

Satriawan³

2023

JAC

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To accelerate the target of national food self-sufficiency, especially rice, the development of upland rice that has high yields and is adaptive to extreme environments is needed. Fulfillment of high-yielding characteristics begins with characterization and selection to get the most adaptive varieties. This study aims to identify the morpho-physiological characteristics of Aceh rice germplasm. The study was conducted in Gampong Paloh Lada and at the Agroecotechnology Laboratory, Faculty of Agriculture, Universitas Malikussaleh, Aceh Utara Regency, and at the Biology Laboratory in Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, from April to August 2022. This research used a Randomized Block Design non Factorial, comprising 7 local inbreds viz., Unsyiah Cakep (G1), Unsyiah Seumeulu (G2), Cot Bada (G3), Sigunca (G4), Sigupai (G5), Cot Bada (G6) and Rajasa (G7). The parameters measured were growth and yield variables consisting of plant height, number of tillers, flowering age, leaf proline content, root length, shoot-root ratio, number of grains, and weight of 1000 grains. The results indicated that the local germplasm Sigunca and Sigupai have good adaptability by adjusting plant height and forming more tillers than other germplasm. In terms of generative growth, Unsyiah Mantap and Cot Bada are entering generative growth more quickly, as marked by the appearance of flowers. The proline content as an indicator of resistance to water limitations was achieved at the highest level in Unsyiah Cakap at 5 g/mol, followed by Unsyiah Mantap at 3 g/mol.

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Association mapping for yield traits under drought stress in Autumn rice germplasm collection of Assam

Cited by 11 publications

References 32 publications

Identification of Drought Tolerance on the Main Agronomic Traits for Rice (Oryza sativa L. ssp. japonica) Germplasm in China

Identification of Drought Tolerance on the Main Agronomic Traits for Rice (Oryza sativa L. ssp. japonica) Germplasm in China

Untitled

The Diversity of Agronomic Characteristics of Several Local Aceh Rice Germplasm

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