Correlation and path analysis of agronomic and morphological traits in maize

Silva, Tallyta Nayara; Môro, Gustavo Vitti; Alves, Pedro Luís da Costa Aguiar; Santos, Durvalina Maria Mathias dos; Buzinaro, Rodolfo

doi:10.5935/1806-6690.20160041

Cited by 34 publications

(27 citation statements)

References 15 publications

(9 reference statements)

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“…Similar results were also reported by Singh et al (2016); Meena et al (2017) and Pal et al (2018) for physiological maturity, on pigeonpea. These results suggested possibility of indirect selection in correlated traits (Silva et al, 2016) viz., days to 50% flowering cannot be prioritized in selection without effects on physiological maturity. Moreover, the positive significant association between grain yield and plant height, number of branches per plant, pod length, number of pods per plant and number of seeds per pod indicates that these traits are important yield contributing traits in pigeonpea.…”

Section: Discussionmentioning

confidence: 81%

Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

̈¹,

̈datin²,

Loko³

et al. 2020

J. Plant Breed. Crop Sci.

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Pigeonpea (Cajanus cajan L. Millspaugh) is a neglected and under-utilized crop consumed in several regions of word. In order to assess performance of pigeonpea landraces grown in Benin for useful breeding programs, 50 accessions were collected from 39 villages. These accessions were characterized by using 12 qualitative and 11 quantitative traits. Based on the seeds morphological characteristics, the 50 accessions were grouped in 12 morphotypes. However, 8 morphological classes were obtained with cluster analysis based on the unweighted pair group method with arithmetic average method using qualitative traits, whereas in principal component analysis only 5 clusters have been obtained using quantitative traits. The association/correlation among quantitative characters showed that grain yield was negatively correlated with pod width, days to 50% flowering and physiological maturity while it was positively correlated with pod length, pods per plant, branches per plant and number of seeds per pod. Based on four quantitative traits (number of pods per plant, number of seeds per pod, 100 seed weight, and early maturity), the 23 accessions from cluster 3 of whom kk5 (Ekloui), kk8 (Nontchiovi kloui), kk15 (Otili founfoun), kk18 (Klouékoun wéwé), kk22 (Otili), kk23 (CA monlikoun) and kk28 (Hounkoun wéwé) have been recommended as good sources of germplasm for improving the pigeonpea productivity. Further characterization using molecular techniques as well as conservation attention should be conducted to confirm the present result and maintain the germplasm for future breeding programs.

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Section: Discussionmentioning

confidence: 81%

Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

̈¹,

̈datin²,

Loko³

et al. 2020

J. Plant Breed. Crop Sci.

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“…This indirect selection is carried out based on secondary characteristics, with greater heritability or the assessment of which is easier, providing faster genetic gains compared to direct selection. In fact, correlation analysis has assisted in the indirect selection for characteristics of roots [56], for productivity in different crops [57, 58, 59], and for nutritional aspects and quality of fruits [60, 61]. Correlation analysis can also be very useful in the characterization and management of plant germplasm, as it has the ability to optimise the choice and the number of descriptors to be used in this process.…”

Section: Discussionmentioning

confidence: 99%

Germplasm of Brazilian winter squash (Cucurbita moschataD.) displays vast genetic variability, allowing identification of promising genotypes for agro-morphological traits

Gomes

Júnior

Almeida

et al. 2020

Preprint

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13Winter squash fruits (Cucurbita moschata D.) are among the best sources of vitamin A 14 precursors and constitute sources of bioactive components such as phenolic compounds and 15 flavonoids. Approximately 70% of C. moschata seed oil is made up of unsaturated fatty acids, 16 with high levels of monounsaturated fatty acids and components such as vitamin E and 17 carotenoids, which represent a promising nutritional aspect in the production of this vegetable. 18C. moschata germplasm expresses high genetic variability, especially in Brazil. We assessed 91 19 C. moschata accessions, from different regions of Brazil, and maintained at the UFV Vegetable 20 Germplasm Bank, to identify early-flowering accessions with high levels of carotenoids in the 21 fruit pulp and high yields of seed and seed oil. Results showed that the accessions have high 22 variability in the number and mass of seeds per fruit, number of accumulated degree-days for 23 flowering, total carotenoid content, and fruit productivity, which allowed selection for 24 considerable gains in these characteristics. Analysis of the correlation between these 25 characteristics provided information that will assist in selection to improve this crop. Cluster 26 analysis resulted in the formation of 16 groups, confirming the variability of the accessions. Per 27 se analysis identified accessions BGH-6749, BGH-5639, and BGH-219 as those with the earliest 28flowering. Accessions BGH-5455A and BGH-5598A had the highest carotenoid content, with 29 averages greater than 170.00 μg g -1 of fresh mass. With a productivity of 0.13 t ha -1 , accessions 30 BGH-5485A, BGH-4610A, and BGH-5472A were the most promising for seed oil production. 31These last two accessions corresponded to those with higher seed productivity, averaging 0.58 2 32 and 0.54 t ha -1 , respectively. This study confirms the high potential of this germplasm for use in 33 breeding for promotion of earlier flowering and increase in total carotenoid content of the fruit 34 pulp and in seed and seed oil productivity. 35 36 38 39 3 65 making this crop fundamental for ensuring healthier diets and promoting food security in the 66 regions where it is grown, particularly in less developed regions and in the context of family-67 based farming. 68 Associated with its socio-economic importance, C. moschata germplasm commonly expresses 69 high genetic variability in all regions where it occurs [15, 16, 17], especially in Brazil [18, 19, 70 20]. Archaeological evidence indicates that this species was present in Latin America prior to 71 colonisation, and appears to have already been an important component in the diet of the native 72 peoples living there [21, 22, 23]. Currently, the variability of this vegetable in Brazil is closely 73 tied to the human populations involved in its cultivation, who are predominantly family-based 74 farmers. The selection practised over time by these populations, associated with the exchange of 75 seeds between them, and the natural occurrence of hybridization in the germplasm of th...

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“…Menurut Huang et al (2013), seleksi berdasarkan karakter fenotipe adalah cara paling umum dalam program pemuliaan tanaman. Cruz dan Carnero (2006) dalam Silva et al (2016), menyatakan bahwa seleksi mempermudah pengukuran dan identifikasi karakter yang berkorelasi dengan parameter yang diinginkan dan memiliki nilai heritabilitas tinggi. Menurut Nogueira et al (2012) dalam Goncalves et al (2017) proses seleksi bertujuan untuk memperbaiki karakter utama, mempertahankan atau meningkatkan ekspresi secara terus menerus.…”

Section: Pendahuluanunclassified

Evaluasi Karakter Morfologi Untuk Perbaikan Genetik Tanaman Pinang ( Areca Cathecu L.) di Padang Pariaman [Evaluation Of Morphological Characters For Arecanut (Areca Cathecu L.) Genetic Improvment In Padang Pariaman]

Miftahorrachman¹,

Mantau²,

Hervina³

2018

Bull. Palma

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<h4> </h4>Evaluation of morphological characters that directly affect the yield is the first step in genetic improvement of areca nut requiring knowledge of the relationship of morphological characters especially production. Morphological characters that are affected directly to yield will be utilized as a basis for selection to increase crop production. The aim of this research is to know morphological characters that directly influence the number of fruits per bunchas the basis of selection for plant improvement. The research was conducted in Korong Koto Padang and Korong Toboh, Nagari Sikucua, V Koto Kampung Dalam District, Padang Pariaman District, West Sumatera Province in December 2017. The result of path analysis indicated that character of girth (r = 0,4190), number of bunches (r = 0,4488), equatorial length of fruit (r = 0,8420), kernel weight (r = 0,5451), equatorial length of kernel (r = 0,6785), and polar length of kernel (r = 0,8443) has a direct effect on fruit production of Local arecanut. For Wangi arecanut only obtained one character that is equatorial length of fruit (r = 0.4984) that directly affect fruit production. The variety of appearance of Local areca nut characters leads to greater selection opportunities compared to Wangi arecanut.The research showed that for Local areca nut, the character of girth, number of bunches, equatorial length of whole fruit, kernel weight, equatorial length of kernel, and polar length of kernel can be used as the selection for the production, while for Wangi arecanut only characters of equatorial length of fruit can be used as the basis of selection.ABSTRAKPerbaikan genetik Pinang membutuhkan pengetahuan tentang hubungan karakter morfologi terutama dengan produksi. Penelitian bertujuan untuk mencari karakter-karakter morfologi yang berpengaruh secara langsung terhadap jumlah buah per tandan untuk dijadikan dasar seleksi bagi perbaikan tanaman. Penelitian dilakukan di Korong Koto Padang dan Korong Toboh, Nagari Sikucua, Kecamatan V Koto Kampung Dalam, Kabupaten Padang Pariaman, Provinsi Sumatera Barat pada bulan Desember Tahun 2017. Analisa sidik lintas antara sebelas karakter morfologi dan komponen buah dengan jumlah buah menggunakan rumus dari Singh dan Chaudary. Hasil analisis sidik lintas diperoleh karakter Lingkar Batang (r = 0.4190) , Jumlah Tandan (r = 0.4488) , Panjang Equatorial Buah Utuh (r = 0.8420), Berat Kernel (r = 0.5451) , Panjang Equatorial Kernel (r = 0.6785), dan Panjang Polar Kernel (r = 0.8443) berpengaruh langsung terhadap produksi buah untuk pinang local. Pada Pinang Wangi hanya diperoleh satu karakter yaitu Panjang Equatorial Buah (r = 0.4984) yang berpengaruh langsung terhadap produksi buah. Manfaat hasil penelitian ini adalah karakter-karakter Lingkar Batang, Jumlah Tandan, Panjang Equatorial Buah Utuh, Berat kernel, Panjang Equatorial Kernel, dan Panjang Polar Kernel dapat dijadikan dasar seleksi untuk perbaikan produksi Pinang Lokal, sementara untuk Pinang Wangi hanya karakter Panjang Equatorial Buah Utuh yang dapat dijadikan dasar seleksi.

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Correlation and path analysis of agronomic and morphological traits in maize

Cited by 34 publications

References 15 publications

Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

Germplasm of Brazilian winter squash (Cucurbita moschataD.) displays vast genetic variability, allowing identification of promising genotypes for agro-morphological traits

Evaluasi Karakter Morfologi Untuk Perbaikan Genetik Tanaman Pinang ( Areca Cathecu L.) di Padang Pariaman [Evaluation Of Morphological Characters For Arecanut (Areca Cathecu L.) Genetic Improvment In Padang Pariaman]

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