Exploitation of genetic potential of sweetpotato for end-user traits improvement

Baafi, Ernest; Ofori, Kwadwo; Blay, Essie; Gracen, Vernon; Manu-Aduening, Joseph; Carey, Edward E.

doi:10.4314/acsj.v24i4.4

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…Hasil perhitungan nilai KKF dan KKG pada penelitian ini menunjukkan nilai KKF lebih besar dari nilai KKG dengan perbedaan nilai sangat kecil pada hampir semua karakter yang diamati, kecuali pada diameter sulur yang mempunyai nilai KKF dan KKG sama. Menurut Acquaah (2012) dan Baafi et al (2016), hal ini mengindikasikan bahwa keragaman yang terdapat pada aksesi ubi jalar juga dipengaruhi oleh faktor lingkungan selain oleh faktor genetik. Bisne et al (2009), Akinwale et al (2010), Hapsari dan Adie (2010)menambahkan perbedaan nilai yang sangat kecil antara KKF dan KKG menunjukkan bahwa faktor genetik lebih berperan dalam keragaman karakter-karakter tersebut.…”

Section: Hasil Dan Pembahasanunclassified

Keragaan Karakter Agronomi dan Parameter Genetik Aksesi Ubi Jalar serta Toleransinya terhadap Hama Boleng

Rahajeng¹,

Indiati²

2018

bulpa

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Plasma nutfah merupakan sumber gen yang digunakan dalam perakitan varietas. Informasi dari aksesi plasma nutfah mengenai keragaan, keragaman, daya pewarisan, dan kemajuan genetik harapan, serta toleransinya terhadap serangan hama dan penyakit perlu tersedia untuk merakit varietas baru. Tujuan penelitian adalah untuk mendapatkan informasi keragaan karakter agronomi dan paramater genetik aksesi ubi jalar (<em>Ipomoea batatas L.</em>) serta toleransinya terhadap hama boleng (<em>Cylas formicarius</em>). Penelitian dilaksanakan di Kebun Percobaan Muneng pada Mei–September 2014. Penelitian menggunakan rancangan acak kelompok dengan tiga ulangan. Bahan yang digunakan adalah 75 aksesi ubi jalar koleksi Balai Penelitian Tanaman Aneka Kacang dan Umbi (Balitkabi) dari berbagai daerah di Indonesia. Hasil analisis ragam menunjukkan perbedaan genotipe yang sangat nyata pada semua karakter yang diamati. Aksesi MLGI 0247 menunjukkan bobot umbi per plot tertinggi, sedangkan aksesi MLGI 0175 menunjukkan nilai terendah. Tujuh puluh lima aksesi yang diuji menunjukkan perbedaan ketahanan terhadap hama boleng yaitu satu aksesi ketahanan tinggi (HR), 19 aksesi ketahanan menengah (MR), 41 aksesi ketahanan rendah (LR), tujuh aksesi rentan (S), dan tujuh aksesi ekstrim rentan (ES). Empat aksesi (MLGI 0257, MLGI 0035, MLGI 0226, MLGI 0281) menunjukkan potensi hasil cukup tinggi dengan ketahanan terhadap hama boleng dengan kategori LR. Karakter diameter sulur, bobot tajuk, bobot umbi/plot, kadar bahan kering umbi, dan intensitas kerusakan umbi memiliki keragaman genetik yang luas, sedangkan panjang sulur, luas daun, indeks panen, jumlah umbi/plot, dan persen umbi boleng memiliki keragaman genetik yang sempit. Indeks panen dan bobot umbi/plot memiliki nilai keragaman genetik luas, heritabilitas, dan kemajuan genetik harapan yang tinggi, sehingga karakter tersebut berguna sebagai kriteria seleksi dan berpotensi memberikan respon positif dalam perbaikan hasil ubi jalar.

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Section: Hasil Dan Pembahasanunclassified

Keragaan Karakter Agronomi dan Parameter Genetik Aksesi Ubi Jalar serta Toleransinya terhadap Hama Boleng

Rahajeng¹,

Indiati²

2018

bulpa

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“…The results of this study also showed that CVp values of all vegetative characters were higher than the CVg values. The value of phenotypic coefficient variation (CVp) that were greatly different from CVg indicated that environmental conditions affected the diversity of sweet potato clones,as also reported by Baafi et al (2016) and Denton & Nwangburuka (2011). Other reports also confirmed higher CVp values than CVg values (Baafi et al, 2016;Denton & Nwangburuka, 2011;El Gendy & Samaa-Abd Khalik, 2014;Wera, Yalu, Ramakrishna, & Deros, 2015).…”

Section: Genetic Performance Based On Vegetative Characters Under Water Stressmentioning

confidence: 80%

“…The value of phenotypic coefficient variation (CVp) that were greatly different from CVg indicated that environmental conditions affected the diversity of sweet potato clones,as also reported by Baafi et al (2016) and Denton & Nwangburuka (2011). Other reports also confirmed higher CVp values than CVg values (Baafi et al, 2016;Denton & Nwangburuka, 2011;El Gendy & Samaa-Abd Khalik, 2014;Wera, Yalu, Ramakrishna, & Deros, 2015). However, El Gendy & Samaa-Abd Khalik (2014) obtained a small difference between CVg and CVp in several characters of sweetpotato indicating that the environment had a limited effect on the characters.…”

Section: Genetic Performance Based On Vegetative Characters Under Water Stressmentioning

confidence: 80%

“…The genetic coefficient of variation (CVg) in the category of quite high to high was obtained in the character of number of tubers and the individual tuber weight (Table 3). Baafi et al (2016) found a high coefficient of variation on tuber weight and some other characters in sweet potatoes. According to them, characters with high variations would be suitable for accession selection for desirable characteristics.…”

Section: Genetic Performance Based On Yield Component and Yield Under Water Stressmentioning

confidence: 94%

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Selection Indicators of Yield Components and Yield for Improvement of Local Sweet Potato under Water Stress

et al. 2021

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Genetic diversity is required for crop improvement against environmental stress. Astudy wasconducted to determine characters as selection indicators of water-stress tolerance, and of yield components and yield. The research method involved a one-factor experiment with 21 sweet potato clones, using a Completely Randomized Block design with three replicates. Water stress in this study mean that the bottom of plants was submerged in water at 2 and 3 months of age. Determination of selection indicators was conducted by estimating the coefficients of genetic and phenotypic variations, heritabilities, genetic advance and correlation test result. The characters of number of leaves, individual leaf area, leaf area per plant, leaf area index, stem length, internode length, number of tubers (storage root), individual tuber weight and yieldas selection indicators of water stress tolerance. Selection indicators of yield components consisted of less number of leaves, small leaf size, short stemsand number of branches, whereas selection indicators of yield were small leaf size, number of branches, number of tubers and individual tuber weight. Selection became effective and efficient when the selection indicators were influenced greatly by genetic factors.

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“…Phenotypic coefficients of variation values were higher than genotypic coefficient of variation values with slight difference values for all the observed characters. Akinwale et al, (2010) and Baafi et al, (2016) stated that the diversity is also influenced by environmental factors besides the genetic factors. The slight difference in value between PCV and GCV shows that the influence of genetic factors is more dominant than the influence of environmental factors.…”

Section: Estimation Of Genetic Variance Componentmentioning

confidence: 99%

Genetic Parameters of Agronomic Traits in Sweetpotato Accessions

et al. 2020

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Germplasm as a source of genes in sweetpotato breeding requires information on appearance and genetic parameters. The objectives of this research were to determine the performance and genetic parameters of sweet potato accessions. The research was conducted at Kendalpayak Research Station, Malang, East Java, Indonesia. The materials used were thirty sweet potato accessions from Indonesian Legumes and Tuber Crops Research Institute (ILETRI) germplasm collection. The research was arranged in a Randomized Block Design (RBD) with two replications. The variables observed included: the vines length, the weight of vines, the number and weight of the saleable root per plot, the number and weight of the non-saleable root per plot, the number and weight of root per plant, the root yield, the harvest index, and the dry matter content. The results of ANOVA showed a significant difference among the tested genotypes in almost all traits observed except on weight of non-saleable root. PCV estimation was higher than GCV estimation for all the observed characters. The weight of the saleable root per plot, the weight of root per plant, and the root yield that showed a wide range of PCV and GCV as well as high broad-sense heritability indicated that these traits had additive gene effect and more reliable for effective selection. The broad GCV in a population is effective for selection to obtain the superior variety.

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Exploitation of genetic potential of sweetpotato for end-user traits improvement

Cited by 4 publications

References 13 publications

Keragaan Karakter Agronomi dan Parameter Genetik Aksesi Ubi Jalar serta Toleransinya terhadap Hama Boleng

Keragaan Karakter Agronomi dan Parameter Genetik Aksesi Ubi Jalar serta Toleransinya terhadap Hama Boleng

Selection Indicators of Yield Components and Yield for Improvement of Local Sweet Potato under Water Stress

Genetic Parameters of Agronomic Traits in Sweetpotato Accessions

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