Hybrid prediction based on SSR-genetic distance, heterosis and combining ability on agronomic traits and yields in sweet and waxy corn

Dermail, Abil; Suriharn, Bhalang; Chankaew, Sompong; Sanitchon, Jirawat; Lertrat, Kamol

doi:10.1016/j.scienta.2019.108817

Cited by 29 publications

(35 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Negative correlation implies that the higher the genetic distance, the higher the MLN resistance or tolerance however, the magnitude of correlation was low for both DS and AUDPC ( Table 2). Previous studies have reported similar results with low but significant negative correlations [10,14,30,31]. Gowda et al, [14] reported no significant association between Rogers' distance and heterosis from a weakly related panel of triticale lines.…”

Section: Discussionmentioning

confidence: 60%

Hybrid Breeding for MLN Resistance: Heterosis, Combining Ability, and Hybrid Prediction

Nyaga

Gowda

Beyene

et al. 2020

Plants

View full text Add to dashboard Cite

Prior knowledge on heterosis and quantitative genetic parameters on maize lethal necrosis (MLN) can help the breeders to develop numerous resistant or tolerant hybrids with optimum resources. Our objectives were to (1) estimate the quantitative genetic parameters for MLN disease severity, (2) investigate the efficiency of the prediction of hybrid performance based on parental per se and general combining ability (GCA) effects, and (3) examine the potential of hybrid prediction for MLN resistance or tolerance based on markers. Fifty elite maize inbred lines were selected based on their response to MLN under artificial inoculation. Crosses were made in a half diallel mating design to produce 307 F1 hybrids. All hybrids were evaluated in MLN quarantine facility in Naivasha, Kenya for two seasons under artificial inoculation. All 50 inbreds were genotyped with genotyping-by-sequencing (GBS) SNPs. The phenotypic variation was significant for all traits and the heritability was moderate to high. We observed that hybrids were superior to the mean performance of the parents for disease severity (−14.57%) and area under disease progress curve (AUDPC) (14.9%). Correlations were significant and moderate between line per se and GCA; and mean of parental value with hybrid performance for both disease severity and AUDPC value. Very low and negative correlation was observed between parental lines marker based genetic distance and heterosis. Nevertheless, the correlation of GCA effects was very high with hybrid performance which can suggests as a good predictor of MLN resistance. Genomic prediction of hybrid performance for MLN is high for both traits. We therefore conclude that there is potential for prediction of hybrid performance for MLN. Overall, the estimated quantitative genetic parameters suggest that through targeted approach, it is possible to develop outstanding lines and hybrids for MLN resistance.

show abstract

Section: Discussionmentioning

confidence: 60%

Hybrid Breeding for MLN Resistance: Heterosis, Combining Ability, and Hybrid Prediction

Nyaga

Gowda

Beyene

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…This hybrid came from parents with good per se and general combining ability (GCA). Supersweet corn line 101L/TSC-10 performed good per se and GCA for anthesis date, plant height, and total sugar, whereas the male KV/mon for anthesis date, plant height, husked ear yield, and amylopectin [16,17]. This finding illustrates that each parent with good per se and GCA could share favorable alleles to the progeny.…”

Section: Candidates Of Sweet-waxy Corn Hybrids and The Expected Ideotypes For Three Groups Of Preferencesmentioning

confidence: 76%

“…Agronomy 2022, 12, 87 2 of 16 Three groups of stakeholders are critically important for vegetable corn breeders: consumers, growers, and seed producers. While traditional waxy corn is recognized for its high stickiness due to a high proportion of amylopectin [6], today's consumers prefer more palatable corn with balanced flavor, texture, and aroma.…”

Section: Introductionmentioning

confidence: 99%

“…Sweet-waxy corn hybrids have been proposed to improve the eating quality of waxy corn through the concept of synergistic corn and Mendelian ratio between waxy and sweet kernels [1,15]. As a preliminary step, several sweet and waxy corn inbred lines with good general combiners for agronomic traits [16] and sweet-waxy corn hybrids possessing two to three recessive genes with a balanced proportion of total sugar, amylopectin, and phytoglycogen [17] have been identified. The question is whether sweet-waxy corn hybrids appeal to consumers, farmers, and seed producers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simultaneous Selection of Sweet-Waxy Corn Ideotypes Appealing to Hybrid Seed Producers, Growers, and Consumers in Thailand

et al. 2021

Self Cite

View full text Add to dashboard Cite

Multi-trait selection helps breeders identify genotypes that appeal to divergent groups of preferences. In this study, we performed simultaneous selection of sweet-waxy corn hybrids on several traits covering the perspectives of consumers (taller kernel depth, better eating quality), growers (early maturity, shorter plant stature, and high ear yield), and seed producers (high flowering synchrony, acceptable seed yield, and good plant architecture). Three supersweet corn lines and 8 waxy corn lines were intercrossed to generate 48 F1 hybrids according to North Carolina Design II, and these genotypes were laid out in a randomized complete block design with 3 replications across 2 seasons between 2017 and 2018. A sensory blind test on sweetness, stickiness, tenderness, and overall liking was conducted to assess the eating quality of steamed corn samples. Two methods of simultaneous selection, namely unweighted selection index and overall rank-sum index (ORSI), were applied to rank crosses, following all targeted groups of preferences. Genetic parameters and genetic gain were estimated to evaluate the effectiveness of those selection methods. Both approaches had similar patterns of preferable realized gain on each given trait and could identify similar top five crosses with only slight order changes, implying that these methods were effective to rank genotypes according to given selection criteria. One of the tested crosses, 101L/TSC-10 × KV/mon, consistently had the highest unweighted selection index in the dry (7.84) and the rainy (7.15) seasons and the lowest ORSI (310), becoming a promising candidate as synergistic sweet-waxy corn hybrid appealing to consumers, growers, and seed producers. The expected ideotypes of sweet-waxy corn hybrid are discussed.

show abstract

“…This theory was later tested in practical hybrid breeding of different plant species. Several authors have reported in different crops no or low correlations between heterosis and the genetic distance defined by molecular markers not linked to the required trait and higher heterosis effect for a yield reported in intra-group than for inter-group hybrids [36][37][38][39]. Others stated that some significant correlations between genetically different heterotic groups formed by molecular markers and yield in hybrids were found only in particular environments and across environments [40].…”

Section: Discussionmentioning

confidence: 99%

Formation of Potential Heterotic Groups of Oat Using Variation at Microsatellite Loci

Havrlentová

Ondreičková

Hozlár

et al. 2021

Plants

View full text Add to dashboard Cite

An evaluation of polymorphism at the microsatellite loci was applied in distinguishing 85 oat (Avena sativa L.) genotypes selected from the collection of genetic resources. The set of genotypes included oats with white, yellow, and brown seeds as well as a subgroup of naked oat (Avena sativa var. nuda Koern). Variation at these loci was used to form potential heterotic groups potentially used in the oat breeding program. Seven from 20 analyzed microsatellite loci revealed polymorphism. Altogether, 35 microsatellite alleles were detected (2–10 per locus). Polymorphic patterns completely differentiated all genotypes within the subgroups of white, brown, and naked oats, respectively. Only within the greatest subgroup of yellow genotypes, four pairs of genotypes remained unseparated. Genetic differentiation between the oat subgroups allowed the formation of seven potential heterotic groups using the STRUCTURE analysis. The overall value of the fixation index (Fst) suggested a high genetic differentiation between the subgroups and validated a heterotic grouping. This approach can be implemented as a simple predictor of heterosis in parental crosses prior to extensive field testing or development and implementation of more accurate genomic selection.

show abstract

Hybrid prediction based on SSR-genetic distance, heterosis and combining ability on agronomic traits and yields in sweet and waxy corn

Cited by 29 publications

References 23 publications

Hybrid Breeding for MLN Resistance: Heterosis, Combining Ability, and Hybrid Prediction

Hybrid Breeding for MLN Resistance: Heterosis, Combining Ability, and Hybrid Prediction

Simultaneous Selection of Sweet-Waxy Corn Ideotypes Appealing to Hybrid Seed Producers, Growers, and Consumers in Thailand

Formation of Potential Heterotic Groups of Oat Using Variation at Microsatellite Loci

Contact Info

Product

Resources

About