Combining ability analysis of tuber yield and related traits in potatoes

In potatoes (Solanum tuberosum L. 2n=4x=48) both the general combining ability (GCA) effects of parents and specific combining ability (SCA) of crosses are important in conditioning traits of economic importance. The objective of this study was to determine the combining abilities for tuber yield and its components on seven high-yielding commercial cultivars of potato and advanced potato clones. Significant differences were found between the parents in the all of traits that are associated with high genetic diversity between parents. GCA for tuber form, length of stolon and number of tuber per plant were high and for stem height, tuber skin appearance and eye dept were low. Heritability estimated from 49 percent in the number of stem to 84 percent in tuber skin appearance. Both heritability and genetic advance as percent of mean estimates were high for tuber yield, tuber form, length of stolon, tuber size, and number of tuber per plant and tuber size uniformity. AS10, AS12, AS14 and UT43 clones was best general combiner for the tuber yield, tuber size uniformity, eye depth, tuber dry matter and length of stolon. The SCA effects were the highest in the cross Savalan?UT43, Luca?AS20, Stbr2?Savalan and Picasso?HS in the traits were considered. Savalan and UT43 parents used in the crosses also have high GCA in studied traits. Finally results showed that Savalan, UT43, AS10, AS12 and AS14 in the studied traits was the high GCA and better than other parents.

Download Full-text

Combining ability analysis of earliness and yield of potato (Solanum tuberosum L.) genotypes in Uganda

Euphytica ◽

10.1007/s10681-018-2201-8 ◽

2018 ◽

Vol 214 (7) ◽

Author(s):

Prossy Namugga ◽

Julia Sibiya ◽

Rob Melis ◽

Alex Barekye

Keyword(s):

Solanum Tuberosum ◽

Combining Ability ◽

Solanum Tuberosum L ◽

Combining Ability Analysis

Download Full-text

The effect of inoculation of potato (Solanum tuberosum L.) microplants with arbuscular mycorrhizal fungi on tuber yield and tuber size distribution

Applied Soil Ecology ◽

10.1016/s0929-1393(00)00089-5 ◽

2000 ◽

Vol 15 (2) ◽

pp. 137-144 ◽

Cited By ~ 25

Author(s):

Elizabeth M Duffy ◽

Alan C Cassells

Keyword(s):

Solanum Tuberosum ◽

Arbuscular Mycorrhizal Fungi ◽

Size Distribution ◽

Mycorrhizal Fungi ◽

Tuber Yield ◽

Solanum Tuberosum L ◽

Arbuscular Mycorrhizal ◽

Tuber Size ◽

Tuber Size Distribution

Download Full-text

Effects of Seed Tuber Size and Plant Population on Seed Tuber Yield of Potato (Solanum Tuberosum L.) in Central Ethiopia

10.7176/jnsr/9-3-08 ◽

2019 ◽

Cited By ~ 1

Keyword(s):

Solanum Tuberosum ◽

Tuber Yield ◽

Seed Tuber ◽

Solanum Tuberosum L ◽

Tuber Size ◽

Plant Population ◽

Central Ethiopia

Download Full-text

Combining Ability Analysis of Dry Matter Content, Reducing Sugars and Yield of Potato (Solanum tuberosum L.) Genotypes in Uganda

Journal of Scientific Agriculture ◽

10.25081/jsa.2020.v4.6080 ◽

2020 ◽

pp. 1-8

Author(s):

Edgar Muhumuza ◽

Richard Edema ◽

Prossy Namugga ◽

Alex Barekye

Keyword(s):

Solanum Tuberosum ◽

Combining Ability ◽

Dry Matter ◽

Reducing Sugars ◽

Tuber Yield ◽

Solanum Tuberosum L ◽

Matter Content ◽

Average Weight ◽

Dry Matter Content ◽

Additive Genetic Effects

Potato (Solanum tuberosum L.) in Uganda is a major food and cash crop mainly grown in the highland regions by small-scale farmers. The increasing importance of potato as a processed product requires new varieties possessing quality processing attributes with acceptable yield. The objectives of this study were to estimate the combining ability effects for dry matter content, reducing sugars, and yield related traits in potato. Nineteen F1 families generated from eight parents using a half diallel mating design were evaluated for dry matter content, reducing sugars, average weight per tuber and total tuber yield at Kachwekano research station. Additive genetic effects were predominant for dry matter content while non-additive effects for the other traits. The GCA/SCA ratios were 0.58, 0.28, 0.17 and 0.44 for dry matter content, reducing sugars, average weight per tuber and total tuber yield respectively. Broad sense heritability estimates were 50.6% for dry matter content, 77.8% for reducing sugars, 90.3% for average weight per tuber and 29.5% for total tuber yield. Parents NAROPOT 3 and 395096.2 had desirable GCA effects for both dry matter content and reducing sugars. Families of nkrk19.17 x Rutuku had desirable SCA effects for dry matter content while Rutuku x 393077.54 and nkrk19.17 x 392657.8 had desirable SCA effects for reducing sugars. Additive genetic effects for dry matter content imply that, genetic gains can be achieved through different selection methods and trait transferred to the respective progenies. The selected parents and families will be subjected to further clonal evaluation and selection.

Download Full-text

Genetic Diversity Based on Randomly Amplified Polymorphic DNA (RAPD) and Its Relationship with the Performance of Diploid Potato Hybrids

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.122.6.740 ◽

1997 ◽

Vol 122 (6) ◽

pp. 740-747 ◽

Cited By ~ 14

Author(s):

M.M. Paz ◽

R.E. Veilleux

Keyword(s):

Genetic Distance ◽

Combining Ability ◽

Rapd Markers ◽

Tuber Yield ◽

Genetic Relationships ◽

Field Evaluation ◽

Banding Patterns ◽

In Vitro Plantlets ◽

Better Than

RAPD analysis was conducted on in vitro plantlets of Solanum phureja Juz. & Buk. monoploids and diploid heterozygous pollinators. Among 60 decamer primers screened, 11 did not show polymorphism while some primers produced complex banding patterns or faint bands that were difficult to score. Genetic distance estimates were based on 151 polymorphic RAPD markers of 208 bands scored using 33 primers. Simple matching and Jaccard coefficients were calculated to estimate genetic similarity (GS). Genetic distance (GD=1-GS) among genotypes ranged from 0.0 to 0.664. Cluster analysis yielded groups of genotypes that were consistent with known genomic compositions or genetic relationships inferred from their pedigree. Field evaluation of 14 F1 families resulting from five S. phureja doubled monoploids (DMs) crossed to three heterozygous pollinators (IDs) revealed significant differences in total tuber number, total tuber yield, average tuber mass, and vigor. Total tuber yield per family ranged from 174 to 404 g per plant and was significantly lower than the control `Kennebec'. The general combining ability of DM BARD 13-14/202 was superior to other DM parents. Specific combining ability was observed in progeny of AD2-4/3s.8 H ID 4. Among male parents, ID 8 performed better than ID 4 or ID 5. Using simple matching, the largest parental genetic distance was always associated with the highest total tuber yield among progenies of DM parents. A similar trend was obtained using Jaccard coefficients. Based on our results, RAPD markers may facilitate the identification of diverse parents to maximize the expression of heterosis in S. phureja hybrids.

Download Full-text

Diallel Cross in Potato Cultivars (Solanum tuberosum L.) and Evaluation of Their Progenies Under Deficit Water Stress

Acta Agrobotanica ◽

10.5586/aa.7325 ◽

2020 ◽

Vol 73 (2) ◽

Author(s):

Ghasem Rahimi Darabad ◽

Mohammad Reza Hassandokht ◽

Davoud Hassanpanah ◽

Amir Mousavi

Keyword(s):

Combining Ability ◽

Tuber Yield ◽

Agronomic Traits ◽

Solanum Tuberosum L ◽

Block Design ◽

Diallel Cross ◽

Growth Conditions ◽

Potato Cultivars ◽

Water Deficit Stress ◽

Breeding Populations

This study was performed to assess superior potato clones for agronomic traits and water deficit stress tolerance in laboratory and greenhouse settings over 3 years (2016–2018). Four cultivars, ‘Satina,’ ‘Caesar,’ Savalan,’ and ‘Agria’ were used as parents and crossed by mutual hybridization based on a diallel cross using the Griffing III method. Of 279 successful crosses, 7,980 true potato seeds from 12 breeding populations were obtained, from which 2,313 seeds germinated and 244 hybrids were selected. The selected hybrids were cultured in triplicate in a splitplot based on a randomized complete block design. The main factor consisted of three levels of irrigation (100%, 80%, and 60% of available water) and a subfactor of 12 populations (♀‘Agria’ × ‘Satina’♂, ♀‘Agria’ × ‘Caesar’♂, ♀‘Agria’ × ‘Savalan’♂, ♀‘Satina’ × ‘Agria’♂, ♀‘Satina’ × ‘Caesar’♂, ♀‘Satina’ × ‘Savalan’♂, ♀‘Caesar’ × ‘Satina’♂, ♀‘Caesar’ × ‘Agria’♂, ♀‘Caesar’ × ‘Savalan’♂, ♀‘Savalan’ × ‘Satina’♂, ♀‘Savalan’ × ‘Agria’♂, and ♀‘Savalan’ × ‘Caesar’♂). In all three environmental conditions, the highest tuber yield and tuber weight per plant were related to ♀‘Agria’ × ‘Caesar’♂. The most general combining ability that produced positive and significant tuber yield in mild and severe stress conditions was in ‘Agria’ and ‘Caesar’ cultivars. Therefore, these cultivars can easily transfer these traits to offspring and increase the expression of these traits. The specific combining ability between potato cultivars had positive and significant effects on tuber yield under the growth conditions tested. These crosses can be used for the production of drought resistant potato clones.

Download Full-text