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Stability analysis of pre-commercial hybrid corn developed by the National Corn and Sorghum Research Center |
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| รหัสดีโอไอ | |
| Creator | Rodchanapong Chaiyasit |
| Title | Stability analysis of pre-commercial hybrid corn developed by the National Corn and Sorghum Research Center |
| Contributor | Nattanee Jutirojpakorn, Namwan Sukongjarern, Sansern Jampatong, Choosak Jompuk |
| Publisher | Faculty of Agriculture |
| Publication Year | 2568 |
| Journal Title | Khon Kaen Agriculture Journal |
| Journal Vol. | 53 |
| Journal No. | 4 |
| Page no. | 705-718 |
| Keyword | hybrid, GGE, environments, yield stability |
| URL Website | https://li01.tci-thaijo.org/index.php/agkasetkaj |
| Website title | Khon Kaen Agriculture Journal |
| ISSN | 3027-6497 (Online) |
| Abstract | In the process of maize improvement and selecting single-cross hybrid maize varieties, it is essential to conduct trials in multiple environments before promoting new varieties to farmers. This study aimed to analyze the yield stability of pre-commercial single-cross hybrid maize varieties from the National Corn and Sorghum Research Center and select those with higher yield potential than the Suwan 4452 variety. 23 pre-commercial hybrids and 7 commercial varieties from the public and private sectors were evaluated. The experiments were conducted in a randomized complete block design (RCBD) with three replications in 10 environments across 8 provinces, including Nakhon Ratchasima, Saraburi, Nakhon Sawan, Sukhothai, Tak, Lamphun, Chiang Mai, and Phayao. The genotype plus genotype by environment interaction (GGE) was used to analyze the yield stability. The results showed that there were highly significant differences (P?0.01) in genotype (G), environment (E), and genotype-environment interaction (GE). The pre-commercial hybrids yielded between 1,096 and 1,347 kg/rai. The highest yield was observed in KSX5720 (1,347 kg/rai), followed by KSX5819 (1,336 kg/rai) and KSX6108 (1,278 kg/rai), respectively. The commercial hybrids yielded between 1,094 and 1,448 kg/rai, while the best yield was DK9979C and P3875, yielding 1,448 kg/rai, followed by CP303 at 1,360 kg/rai. The Suwan 4452 check variety yielded 1,197 kg/rai, 17% and 14% lower than KSX5720 and KSX5918, respectively. According to the Eberhart and Russell stability analysis, the regression coefficients (b) for the two hybrid varieties were 1.18 and 1.16, respectively, which did not differ significantly from 1. The GGE biplot explained 56.22% of the total variance (PC1=38.32% and PC2=17.9%). The KSX5720 and KSX5918 varieties demonstrated excellent yield stability and higher yields than Suwan 4452, indicating their potential as new commercial varieties. |
