Evaluation of agro-morphological traits, seed characterization and genetic diversity of local rice (Oryza sativa L.) varieties of Pakistan

Fazal, Urooj; Din, Israr Ud; Khan, Amir Muhammad; Khan, Fahim Ullah; Khan, Mudassar Nawaz; Iqbal, Navid; Ibrahim, Muhammad; Bangash, Sajid Ali Khan

doi:10.1007/s10722-022-01478-4

Cited by 4 publications

(4 citation statements)

References 41 publications

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“…They found the positive correlation (0.62) for filled grain number and negative and significant correlation for the unfilled grain number with grain yield (-0.47*). Therefore, the grain yield is increased by increasing the number of filled grains and decreasing the number of empty grains per panicle which was noticed earlier by Parida et al (2022) and Fazal et al (2022). Not only the panicle length but also the filled grain number and 1000 grain weight also important determining traits for improving grain yield.…”

Section: Results and Discussion Performance Evaluation For Quantitati...mentioning

confidence: 84%

“…Hybrid rice has the capability to increase almost 20-30% more yield than high yielding varieties (HYV) and traditional rice varieties (Fazal et al, 2022;Hossain et al, 2017;Yesmin et al, 2022). In the last two decades, much emphasis has been given to cultivate hybrid rice for the improvement rice production in Bangladesh (Azad et al, 2022;Hasan et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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COMPARATIVE ASSESSMENT OF SELECTED EXOTIC HYBRID RICE (Oryza sativa L.) BASED ON QUANTITATIVE TRAITS ANALYSIS

TABASSUM,

Islam MONSHI,

Shakhawat HOSSAIN

et al. 2023

AgricultForest

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In the plant breeding program, significance and nature of genetic diversity plays a pivotal role in identifying a suitable cultivar for its further improvement. The present study was conducted to compare and analyse the contributions of yield components to grain yield of twenty-one exotic hybrid rice genotypes under field conditions, and evaluate the relationships between 11 grain yield and its components of hybrid rice to identify the suitable cultivars. The principal component analysis showed that the first three components were significant with eigenvalue more than 1 and contributed 50.74%, 16.32% and 11.14% of the total variance, respectively. PC1 included the traits that were related mostly to the plant height (cm), effective tillers, panicle length (cm), grain width (cm), 1000 grain weight (g) and grain yield (t ha -1 ). Cultivars from Heera-2, Qyou-6, SHD-661, Q-5, Q-28, HS-366 performed well in PC1 while cultivars such as HS-558B, T-35, Xiang-11, Lyongyou-5, RXEL-16, RXME-22 performed well in PC2. The cluster analysis grouped the cultivars into three main clusters in which 14 cultivars were grouped into cluster I. And cluster I showed the highest mean value for plant height, panicle length, filled grain with moderate high rate of

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Section: Results and Discussion Performance Evaluation For Quantitati...mentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

COMPARATIVE ASSESSMENT OF SELECTED EXOTIC HYBRID RICE (Oryza sativa L.) BASED ON QUANTITATIVE TRAITS ANALYSIS

TABASSUM,

Islam MONSHI,

Shakhawat HOSSAIN

et al. 2023

AgricultForest

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“…The plant architecture traits, namely, PH, CL, FLL, FLW, PdL, and PL, showed a high extent variation between and within landrace accessions. In previous studies, phenotypic variation in plant traits was reported in the landraces and improved cultivars of aromatic rices (Akhtar et al, 2022;Fazal et al, 2023). Chakravorty et al (2013, Islam, Akter, et al (2018), Mathure et al (2011), andS.…”

Section: Crop Sciencementioning

confidence: 99%

Aromatic rice (Oryza sativa L.) landraces of Indo‐Gangetic Plains of India harbor rich genetic diversity

Bairwa,

Yadav,

Tiwari

et al. 2024

Crop Science

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Aromatic rice (Oryza sativa L.) germplasm conserved in global genebanks needs intensive characterization to assess genetic diversity and population structure for crop improvement. We analyzed a panel of 92 accessions of non‐Basmati aromatic rice landrace germplasm with 23 phenotypic traits and 48 microsatellite markers. The landrace accessions displayed a huge phenotypic diversity for traits, namely, culm length, flag‐leaf length, panicle‐bearing tillers (PBT), plant height, panicle length, peduncle length, panicle exsertion, grain length, grain width, hull color, and 1000‐grain weight (TGW). Phenotypic clustering revealed three major clusters and five principal components explained 81.24% of the variance. TGW was associated positively with grain length, grain width, peduncle length, and grain yield but negatively with culm length and PBT. A total of 528 microsatellite alleles were detected, with 11.0 alleles per locus, revealing the presence of high polymorphism. Genetically, four subpopulations were detected based on structure analysis. In the germplasm, high levels of gene flow (Nm = 1.51) and gene diversity (HE = 0.83) were found. Among the subpopulations, we discovered high levels of inbreeding (FIS = 0.92) and moderate genetic differentiation (FST = 0.14). High polymorphism information content (0.806) along with a high level of molecular variance among genotypes (79%) was detected. A large number of multiple alleles were detected in numerous landrace accessions, revealing the presence of heterogeneity and heterozygotes in the landrace germplasm. The results of the present study are vital for the utilization of landrace diversity in the genetic improvement programs designed for rice quality improvement and consumer preference.

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“…In our study, plant architecture traits like plant height, culm length, flag-leaf length and width, peduncle length and panicle length showed high extent of morphological variation between and within landraces accessions. In previous studies, phenotypic variation in plant traits were reported in both aromatic rice landraces and improved cultivars (Mathure et al 2011;Roy et al 2016;Islam et al 2018a,b;Akhtar et al 2022;Fazal et al 2023). Chakravorty et al (2013) analyzed diversity of 18 agro-morphological traits in 51 landraces of aromatic and non-aromatic rices of West Bengal and reported high variation for plant height, culm length, leaf length and width and panicle length.…”

Section: Morphological Variability In Aromatic Rice Landracesmentioning

confidence: 99%

Aromatic Rice (Oryza sativa L.) Landraces of Indo-Gangetic Plains of India Harbor Rich Genetic Diversity as Revealed by Phenotypic Traits and Microsatellite Markers

Bairwa

Yadav

Tiwari

et al. 2023

Preprint

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Rice (Oryza sativa L.) grains are vital for food security of half of the global population. India has rich diversity for aromatic rice landraces. In order to assess the genetic diversity and population structure in these specialty rices, we characterized 92 germplasm accessions of aromatic rice landraces of Indo-Gangetic Plain region including 10 popular landraces of other states of India using 23 phenotypic traits and 48 microsatellite markers. Landrace accessions displayed huge variability for plant height (PH), culm length (CL), flag-leaf length, auricle colour, leaf-blade pubescence and colour, panicle bearing tillers, panicle length (PL), peduncle length (PdL), panicle exsertion, grain length (GL), grain breadth (GB), hull colour and thousand grain weight (TGW). First five principal components contributed 81.24% phenotypic variation. High positive associations were found between PH and CL (r = 0.83), PdL and PL (0.66), GL and TGW (0.78), and GB and TGW (0.59). Molecular analysis with 48 genome-wide HvSSR markers revealed 11.0 alleles per locus, which evidently showed that a high level of DNA polymorphism exists between landrace accessions. The structure analysis revealed four subpopulations with numerous accessions sharing alleles with other groups. Gene diversity assay revealed high levels of gene diversity (HE = 0.83), Shannon's Information index (I = 1.99) and gene flow (Nm = 1.51) between accessions of aromatic rice landraces. Wright′s F-statistics revealed moderate genetic differentiation (FST = 0.14) among subpopulations and high degree of inbreeding (FIS=0.92) within subpopulations. This was also supported by high polymorphism information content (PIC = 0.806) and analysis of molecular variance (AMOVA), which revealed 79% variance among genotypes. The unique and rare alleles could be used for DNA fingerprinting and differentiation of genotypes. A high number of multiple alleles were observed in number of landrace accessions, which showed the presence of heterogeneity and heterozygotes in the landrace materials. The results of present study are useful for utilization of the landraces in genetic enhancement programmes specially designed for rice quality improvement and consumer's preference.

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Evaluation of agro-morphological traits, seed characterization and genetic diversity of local rice (Oryza sativa L.) varieties of Pakistan

Cited by 4 publications

References 41 publications

COMPARATIVE ASSESSMENT OF SELECTED EXOTIC HYBRID RICE (Oryza sativa L.) BASED ON QUANTITATIVE TRAITS ANALYSIS

COMPARATIVE ASSESSMENT OF SELECTED EXOTIC HYBRID RICE (Oryza sativa L.) BASED ON QUANTITATIVE TRAITS ANALYSIS

Aromatic rice (Oryza sativa L.) landraces of Indo‐Gangetic Plains of India harbor rich genetic diversity

Aromatic Rice (Oryza sativa L.) Landraces of Indo-Gangetic Plains of India Harbor Rich Genetic Diversity as Revealed by Phenotypic Traits and Microsatellite Markers

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