Diversity in Phenotypic Profiles in Landrace Populations of Vietnamese Rice: A Case Study of Agronomic Characters for Conserving Crop Genetic Diversity on Farm

Fukuoka, Shuichi; Suu, Tran Danh; Ebana, Kaworu; Trinh, Luu Ngoc; Nagamine, Tsukasa; Okuno, Kazutoshi

doi:10.1007/s10722-004-4635-1

Cited by 33 publications

(23 citation statements)

References 8 publications

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“…It also revealed that no duplicate existed among the genotypes for the studied characters. Fukuoka et al (2006), Hossain (2008), Sarhadi et al (2009) and Nascimento et al (2011) earlier also found no duplicates from cluster analysis using Mahalanobis' D 2 statistics in rice. The clustering pattern also revealed that the genotypes constellated in the cluster were not originated from the same geographic region.…”

Section: Methodsmentioning

confidence: 93%

Genetic Divergence of Balam Rice (Oryza sativa L.) Germplasm of Bangladesh

Ahmed¹,

Parveen²,

Bashar

et al. 2015

Bangladesh Rice J.

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Forty genotypes of Balam rice germplasm of Bangladesh were studied for 17 morphophysicochemical characters at BRRI during 2009-11. The cluster analysis using Mahalanobis' D 2 statistics, grouped the genotypes into seven clusters, where no duplicate germplasm was found for the studied characters. The highest number of genotypes (8) was constellated into clusters I, III and V and the lowest (2) was in cluster IV. The intraand inter-cluster distances were maximum (1.17 and 21.16) in cluster VII and between clusters II and IV and minimum (0.27 and 2.23) in cluster IV and between clusters II and VII respectively. Based on the values of principal component score, the two-dimensional scatter diagram (Z1-Z2) also distributed the genotypes into seven groups. The genotype of cluster IV, produced the highest flag and penultimate leaf area (1136 cm 2 ), culm diameter (7.2 mm), days to maturity (152 days), primary and secondary branches per panicle (63), grain yield per panicle (4.9 g), 1000-grain weight (29.3 g), grain yield per hill (31.3 g), cooking time (19 min) and amylose content (24.1%). Similarly, the genotype of cluster I, produced the tallest plant (148 cm), maximum straw yield per hill (40.0 g) and protein content (9.6%), while the genotype of cluster VI, produced the highest panicle per plant (21) and the genotype of cluster III, produced the longest grain (8.8 mm). Therefore, it may be possible to obtain the highest mean values for the maximum studied characters, if the genotypes of cluster IV are crossed with the genotypes of cluster I, cluster III and cluster VI respectively. Besides, the canonical variate analysis showed that the grain length, cooking time, straw yield per hill, days to maturity, plant height and grain yield per panicle contributed maximum to the genetic divergence of the studied germplasms. Finally, the study revealed that the Balam rice germplasm can offer a diverse valuable gene reservoir to utilize in hybridization programmes for the improvement of Balam rice.

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Section: Methodsmentioning

confidence: 93%

Genetic Divergence of Balam Rice (Oryza sativa L.) Germplasm of Bangladesh

Ahmed¹,

Parveen²,

Bashar

et al. 2015

Bangladesh Rice J.

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“…In the study with aromatic rice landraces, Fukuoka et al (2006) concluded that significant variation may be found among genotypes with the same name. According to Li et al (2002) diversity analysis based on phenotypic values may not be the perfect representation of the natural groupings of cultivars, because the phenotypic characters are influenced by environmental.…”

Section: Genetic Diversity Analysismentioning

confidence: 99%

“…Morphological traits are directly related to the interaction between a species and its environment (Westoby and Wright 2006). Morphology includes some of the most accessible and functionally important traits, with the potential to be measured for each species (Fukuoka et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Diversity analysis and genetic potency identification of local rice cultivars in Penajam Paser Utara and Paser Districts, East Kalimantan

2016

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Abstract. Nurhasanah, Sadaruddin, Sunaryo W. 2016 Utara and Paser Districts,. Local rice cultivars provide genetic diversity in rice genepool that is very useful for rice breeding programs. Less is known about local rice genetic diversity in East Kalimantan, because their existence only depends on traditional cultivation and conservation by local farmers based on needs and tendencies towards certain varieties. According to the current exploration study conducted in Penajam Paser Utara (PPU) and Paser, the smallest districts in East Kalimantan, there were high genetic diversities of rice existed in that two districts. As many as 71 local rice cultivars were collected, consisted of 53 rice and 18 glutinous rice. Traits characterization showed that there were large variation of plant height (66 to 209.33 cm), culm number (1 to 41.67), culm diameter (0.23 to 1.03 cm), leaf length (39 to 108.33 cm), leaf width (0.83 to 2.67 cm), leaf angle (10 to 50 degree), ligule length (11 to 55 mm) and weight of ten seeds (0.13 to 0.40 gram) in the local rice population showing high phenotypic variations of agro-morphological traits in the population. A strong negative correlation between culm number (tiller) and culm diameter, leaf length as well as leaf width was observed, which indicated that culm number is few if the culm diameter is big, and the leaves are longer and wider. Genetic diversity analysis based on Agro-morphological characters clustered the cultivars in nine and four classes for rice populations in PPU and Paser districts, respectively. Pre-identification of the local rice genetic potencies showed some superior and potential traits which will be very useful for rice breeding programs to develop new superior rice varieties. . Diversity analysis and genetic potency identification of local rice cultivars in Penajam Paser

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“…Yawen et al (2003) studied the genetic diversity on 5285 accessions of indigenous rice in China and found considerable morphological variation among accessions. In India, Patra and Dhua (2003) analyzed the agro-morphological diversity of upland rice and in Vietnam, Fukuoka et al (2006) assessed the variability in agronomic characters among landraces of aromatic rice populations. Using 42 agro-morphological characters associated with 39 SSR markers, Bajracharya et al (2006) examined the genetic relationships among 147 high altitude rice landraces from Jumla, Nepal.…”

Section: Introductionmentioning

confidence: 99%

Agro-morphological characterization of upland rice accessions

Nascimento

Silva

Veasey

2011

Sci. agric. (Piracicaba, Braz.)

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The agro-morphological characterization is fundamental in order to provide information for plant breeding programs. The aim of the present study was to characterize 146 accessions of upland rice (Oryza sativa L.), based on qualitative and quantitative agro-morphological descriptors. The experiment was conducted in Recife, state of Pernambuco, Brazil, using a randomized block design with three replicates. Polymorphism was observed among 12 of 14 qualitative characters evaluated, whereas significant differences (p < 0.05) were observed for 11 of the 14 analysed quantitative traits. Genetic variance was higher than environmental variance and the average inheritability coefficients were above 80 % for all characters, which ensures the predominance of the genetic components in the differences observed among accessions. On the cluster analysis for qualitative traits the accessions were classified in two groups with a total of 18 duplicates, whereas for the quantitative traits three groups were obtained with few subgroups. The principal component analysis for quantitative traits showed great dispersion of the accessions. The most divergent group of accessions included the genotypes Mitsukasane, Mie, Tomoe mochi, Ooba kirishima and Nourin mochi 6, which showed a higher number of spicklets per plant. There is high variability among the rice accessions from the germplasm collection studied, which presents great importance for breeding programs or for genetic studies on this species

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Diversity in Phenotypic Profiles in Landrace Populations of Vietnamese Rice: A Case Study of Agronomic Characters for Conserving Crop Genetic Diversity on Farm

Cited by 33 publications

References 8 publications

Genetic Divergence of Balam Rice (Oryza sativa L.) Germplasm of Bangladesh

Genetic Divergence of Balam Rice (Oryza sativa L.) Germplasm of Bangladesh

Diversity analysis and genetic potency identification of local rice cultivars in Penajam Paser Utara and Paser Districts, East Kalimantan

Agro-morphological characterization of upland rice accessions

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