Morphological and molecular characterization of new plant type core set for yield and culm strength traits in rice (Oryza sativa L.)

Bagudam, Rachana; Eswari, K. B.; Badri, Jyothi; Devi, G. Lakshmi; JaiVidhya, L. R. K.; Bhavani, P; Swathi, G.; Bharath, M. S.; Rao, P. Raghuveer; Kumar, J. Aravind; Fiyaz, R. Abdul; Neeraja, C. N.; Rao, L. V. Subba; Ram, T.

doi:10.1007/s13562-020-00581-w

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…Этот тип был предложен в качестве средства повышения потенциальной урожайности риса по сравнению с существующими высокоурожайными сортами (Jiao et al, 2010;Duan et al, 2019). Другие исследователи, используя методы маркерной селекции и QTL-картирования, работают над получением генотипов с наиболее удачным сочетанием количественных признаков, обеспечивающих высокие урожаи риса (Bagudam et al, 2020;Donde et al, 2020). Кроме того, в селекционную практику по рису начали внедрять технологию геномного редактирования при использовании системы CRISPR/Cas -направленного редактирования геномов (нокаута генов) (Khlestkina, 2019).…”

Section: рис 2 различные морфотипы растений рисаunclassified

Rice breeding for higher crop productivity (a review)

Zelensky,

Zelenskaya

2024

Trudy po prikladnoy botanike, genetike i selektsii

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The main global trends in the breeding of rice cultivars and hybrids are higher plant productivity, adaptability to cultivation conditions, quality of products, and resistance to environmental stressors, including diseases.Efforts of leading breeding centers in the Philippines and China to further increase the rice yield are associated with a change in the plant morphotype: shorter plants with erectoid leaves and large panicles with a high number of grains.The International Rice Research Institute (IRRI) has developed rice cultivars that under favorable conditions in the tropical zone produce a grain yield of up to 10–11 t/ha, with Kecon = 0.5. A heterotic hybrid of rice was obtained in China with a yield of 13.9 t/ha; it has a new plant morphotype (New Plant Type) and a growing season of 163 days. The hybrid is classified as “super rice”.Modern breeding programs are aimed at producing cultivars of “Green Super Rice” using pedigree methods and backcrossing for introgression of target genes through DNA markers, QTL mapping, pyramiding, and recurrent selection.Russian breeders have traditionally produced rice cultivars adapted to local conditions, with a growing season of no more than 125 days. In the 1980s, a program was launched to develop a high-yielding rice cultivar with erectoid leaves for condensed planting. As a result of multiple stepwise hybridization and targeted selection, new source material with target traits of “super rice” was released. Cv. ‘Polyus-5’ with a new plant morphotype was obtained on its basis. This cultivar was included in the State Register and from 2023 approved for commercial production. During the field trials, ‘Polyus-5’ yielded a maximum of 1380 g/m2 over 120 days of the growing season, under the conditions of condensed sowing and increased mineral nutrition.

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Section: рис 2 различные морфотипы растений рисаunclassified

Rice breeding for higher crop productivity (a review)

Zelensky,

Zelenskaya

2024

Trudy po prikladnoy botanike, genetike i selektsii

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“…Another NPT rice core set of 41 accessions (Jyothi et al, 2018) was analysed for genetic diversity employing 52 yield‐related and 12 randomly chosen markers (Bagudam et al, 2019). These were further characterized for agromorphological traits using seven gene‐specific functional markers related to culm strength, grain number and grain weight (Bagudam et al, 2021).…”

Section: Characterization and Evaluation Of Rice Collectionsmentioning

confidence: 99%

“…These were further characterized for agromorphological traits using seven gene-specific functional markers related to culm strength, grain number and grain weight (Bagudam et al, 2021).…”

Section: Mini Ccsmentioning

confidence: 99%

Overview of developed core and mini core collections and their effective utilization in cultivated rice and its related species (Oryza sp.)—A review

et al. 2022

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Genus Oryza consists of two cultivated and 21 related wild species. Cultivated rice is not only the staple food of the majority of the countries in the world, but it also serves as a model crop for genomic studies. The rice germplasm is conserved in different gene banks around the world, which can be accessed for plant breeding programmes aiming to improve rice varieties. However, the ever‐increasing number of accessions poses problem of the phenotypic and genotypic characterization of the germplasm. Therefore, to speed up characterization and utilization of germplasm, the concept of core collection (~10–20% of total base collection) was developed which provides maximum diversity in limited number of accessions. Similarly, a mini core collection (~1–2% of the entire collection) is constructed retaining maximum diversity to provide wider genetic coverage in manageable numbers. The present review summarizes the current information on different core and mini core sets developed for varied purposes from world rice collections using different strategies.

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“…These markers could be used to characterize the germplasm or any other population for validation of respective QTLs and will be much useful in marker assisted breeding programmes. Bagudam et al (2021) used seven gene specific markers including GN1a to screen new plant type-based rice accessions for yield and culm strength traits in rice. Anand et al (2013) screened three QTLs i.e., grain size 3 (GS3), grain weight 2 (GW2) and seed width 5 (qSW5) in 242 rice accessions using QTL linked markers and found that one marker SF28 had significantly associated with grain length at 37 % of phenotypic variance.…”

Section: Number Of Genotypesmentioning

confidence: 99%

Genetic diversity and QTL-marker association analysis of rice germplasm for grain number per panicle and its contributing traits

2022

EJPB

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Rice is one of the leading cereal crops that consumed over half of the world's population. The number of grains per panicle is the main trait to decide grain yield potential of rice. Rice germplasm have rich diversity for panicle related trait. Hence, a study was undertaken to screen 77 diverse rice germplasm for grain number per panicle and its contributing traits. Mahalanobis' D 2 analysis was performed to study genetic diversity among the germplasm. Eight clusters were formed and cluster IV was found to be the largest cluster with 37 genotypes. Cluster V had 20 genotypes with the highest cluster mean value of 298 for the number of grains per panicle. Grain yield per plant and the number of spikelets per panicle were found to be the biggest contributor for total divergence. QTL linked markers were screened in diverse rice germplasm. Among the six QTLs screened, five QTLs were significantly associated with grain number per panicle and its relevant traits. For grain number per panicle the QTLs, Gn1a (0.1058), qGN 4.1 (0.117) and NGP 4 (0.062) recorded high R 2 values. Among the markers, Gn1a indel 3 (GN1a), NKSSR 04-19 (q GN 4.1), RM 6314 (NGP 4) and RM1183 (NOG 1) were identified as the most informative markers for utilization in marker assisted breeding programme. From this study, genotypes viz., Kallukar, CO52, IET 29504, IET 29506, RP-5594-97-5-1, MTU1360, ADT 54 possess high mean value for grain number per panicle and grain yield, linked with functional markers could be used as a donor in marker assisted breeding programme.

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Morphological and molecular characterization of new plant type core set for yield and culm strength traits in rice (Oryza sativa L.)

Cited by 7 publications

References 20 publications

Rice breeding for higher crop productivity (a review)

Rice breeding for higher crop productivity (a review)

Overview of developed core and mini core collections and their effective utilization in cultivated rice and its related species (Oryza sp.)—A review

Genetic diversity and QTL-marker association analysis of rice germplasm for grain number per panicle and its contributing traits

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