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

被引:15
作者
Dermail, Abil [1 ]
Fuengtee, Aphakorn [1 ]
Lertrat, Kamol [2 ]
Suwarno, Willy Bayuardi [3 ]
Lubberstedt, Thomas [4 ]
Suriharn, Khundej [1 ,2 ]
机构
[1] Khon Kaen Univ, Fac Agr, Dept Agron, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Plant Breeding Res Ctr Sustainable Agr, Khon Kaen 40002, Thailand
[3] IPB Univ, Fac Agr, Dept Agron & Hort, Bogor 16680, Indonesia
[4] Iowa State Univ, Dept Agron, Ames, IA 50011 USA
来源
AGRONOMY-BASEL | 2022年 / 12卷 / 01期
关键词
hybrid breeding; selection index; eating quality; flowering synchrony; kernel set; seed production; RECURRENT SELECTION; GENETIC-IMPROVEMENT; EATING QUALITY; MAIZE; INDEX; TRAITS; YIELD; MATURITY; WEIGHT; GENDER;
D O I
10.3390/agronomy12010087
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
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 x 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.
引用
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页数:16
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