Correlation and path coefficient analyses of qualitative and quantitative traits in selected bottle gourd landraces

Mashilo, Jacob; Shimelis, Hussein; Odindo, Alfred

doi:10.1080/09064710.2016.1197965

Cited by 11 publications

(11 citation statements)

References 35 publications

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“…This could be the low yield potential of landraces grown by most farmers in SSA. In the region, landraces are continuously cultivated because they possess farmer-preferred quality traits and their ability to adapt under variable stress conditions due to their genetic diversity and plasticity [ 30 , 31 ].…”

Section: Discussionmentioning

confidence: 99%

Assessing the genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] germplasm collections using phenotypic traits and SNP markers

et al. 2020

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Background Productivity of cowpea [Vigna unguiculata (L.) Walp] in sub-Sahara Africa is curtailed by a lack of farmer-preferred and improved cultivars and modern production technologies. The objectives of the study were to determine the extent of genetic diversity present among a collection of cowpea accessions from Zambia and Malawi using phenotypic traits and single nucleotide polymorphism (SNP) markers and, to select distinct and complementary parental lines for cultivar development. One hundred cowpea genotypes were evaluated for agronomic traits in two selected sites in Zambia, using a 10 × 10 alpha lattice design with two replications. Ninety-four of the test genotypes were profiled with 14,116 SNP markers. Results Number of pods plant− 1 (NPP), pod length (PDL), and number of seeds pod− 1 (NSP), were significantly (p < 0.05) affected by genotype × environment interaction effects. Genotypes such as CP411, CP421, CP645, CP732, Chimponongo, and MS1–8–1-4 exhibited higher grain yield of > 1200 kg/ha with excellent performance in yield components such as NSP, PDL, HSW and GYD. Grain yield had significant (p < 0.05) associations with NPP (r = 0.50), NSP (r = 0.46) and PDL (r = 0.42) useful for simultaneous selection for yield improvement in cowpea. The SNP markers revealed gene diversity and polymorphic information content of 0.22 and 0.17, respectively, showing that the tested cowpea accessions were genetically diverse. Test genotypes were classified into four genetic groups irrespective of source of collection allowing selection and subsequent crosses to develop breeding populations for cultivar development. Conclusions Genotypes Bubebe, CP411, CP421, CP645, Chimponogo and MS1–8–1-4 were identified to be the most genetically divergent and high yielding making them ideal parental lines for breeding. This study provided a baseline information and identified promising cowpea genetic resources for effective breeding and systematic conservation.

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Section: Discussionmentioning

confidence: 99%

Assessing the genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] germplasm collections using phenotypic traits and SNP markers

et al. 2020

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“…Considerable genetic variability exists in bottle gourd genetic resources for fruit horticultural traits (Decker-Walters et al, 2001;Morimoto et al, 2005Morimoto et al, , 2006Sivaraj and Pandravada, 2005;Mashilo et al, 2015Mashilo et al, , 2016bMashilo et al, , 2017b) useful for strategic breeding and cultivar development. The crop show variation for fruit shape, size, length, color, and texture (Figure 1) (Morimoto et al, 2005;Sivaraj and Pandravada, 2005;Yetişir et al, 2008;Xu et al, 2014;Mashilo et al, 2015).…”

Section: Progress In Breeding Of Bottle Gourd Fruit Qualitative Traitsmentioning

confidence: 99%

Progress on Genetic Improvement and Analysis of Bottle Gourd [Lagenaria siceraria (Molina) Standl.] for Agronomic Traits, Nutrient Compositions, and Stress Tolerance: A Review

Mkhize

Mashilo

Shimelis

2021

Front. Sustain. Food Syst.

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Bottle gourd [Lagenaria siceraria (Molina) Standl.] is an important multi-purpose cucurbit crop grown for its leaf, fruit, and seed. It is widely cultivated and used for human consumption in sub-Saharan Africa (SSA) providing vital human nutrition and serving as food security crop. There is wide genetic variation among bottle gourd genetic resources in Africa for diverse qualitative and quantitative attributes for effective variety design, product development, and marketing. However, the crop is under- researched and -utilized, and improved varieties are yet to be developed and commercialized in the region. Therefore, the objective of this review is to provide the progress on bottle gourd genetic improvement and genetic analysis targeting agronomic and horticultural attributes, nutritional composition, biotic, and abiotic stress tolerance to guide current and future cultivar development, germplasm access, and conservation in SSA. The first section of the paper presents progress on breeding of bottle gourd for horticultural traits, agronomic performance, nutritional and anti-nutritional composition, and biotic and abiotic stress tolerance. This is followed by important highlights on key genetic resources of cultivated and wild bottle gourd for demand driven breeding. Lastly, the review summaries advances in bottle gourd genomics, genetic engineering and genome editing. Information presented in this paper should aid bottle gourd breeders and agronomists to develop and deploy new generation and promising varieties with farmer- and market -preferred attributes.

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“…Simple correlation analysis establishes the mutual associations of variables without regard to cause and effect. Path coefficient analysis is useful statistical procedures to estimate the magnitude and nature of associations between selection parameters (Mashilo et al, 2016). With this background information, the present study was carried out for consecutive two years under coastal ecosystem of West Bengal for understanding the variation in growth and yield-determining traits of rapeseed-mustard under late sown condition.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of rapeseed-mustard cultivars under late sown condition in coastal ecosystem of West Bengal

Banerjee

Chatterjee

Sarkar

et al. 2017

JANS

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Abstract:In our present report, we evaluated seven rapeseed mustard cultivars at coastal saline zone of West Bengal, India under rice-mustard sequence in a triplicated randomized block design for 14 traits to study their performance under late sown (2 nd December) condition. The cultivars were sown at 30 cm × 10 cm spacing during winter of 2013−14 and 2014−15. The soil was clay in texture and had the following key properties for the 0−30 cm layer: pH 5.84, electrical conductivity (EC) 1.55 dS/m, available nitrogen (N) 155.24 kg/ha, available phosphorus (P) 105.76 kg/ha, available potassium (K) 365.86 kg/ha and available B 2.63 kg/ha. Among the seven cultivars, Kranti produced significantly (p≤0.05) higher seed yield (1.33 t/ha) closely followed by the hybrids PAC-409 (1.23 t/ha) and Pusa Bold (1.21 t/ha). Seed yield showed significant (p≤0.05) positive correlation with all the independent variables (plant height, R .52). The results indicated that selection of suitable rapeseed mustard cultivars based on these traits would be more effective in improving seed yield in mustard.

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Correlation and path coefficient analyses of qualitative and quantitative traits in selected bottle gourd landraces

Cited by 11 publications

References 35 publications

Assessing the genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] germplasm collections using phenotypic traits and SNP markers

Assessing the genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] germplasm collections using phenotypic traits and SNP markers

Progress on Genetic Improvement and Analysis of Bottle Gourd [Lagenaria siceraria (Molina) Standl.] for Agronomic Traits, Nutrient Compositions, and Stress Tolerance: A Review

Evaluation of rapeseed-mustard cultivars under late sown condition in coastal ecosystem of West Bengal

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