Stability analysis, agronomic performance, and grain quality of elite new plant type rice lines (Oryza sativa L.) developed for tropical lowland ecosystem

Frontiers in Sustainable Food Systems

Sustainable Food Systems

Syaifullah Rahim¹  Arya Widura Ritonga¹  Siti Marwiyah¹  Risky Listiyanto¹  Anggi Nindita¹  Hajrial Aswidinnoor¹  Willy Bayuardi Suwarno¹  Heny Setiyowati² 

[1] Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia;Directorate General of Food Crops, Ministry of Agriculture, Jakarta, Indonesia;

关键词: genotype by environment interaction;    multi-environment trial;    rice breeding;    yield potential;    amylose content;   

DOI  :  10.3389/fsufs.2023.1147611

 received in 2023-01-18, accepted in 2023-08-01,  发布年份 2023

来源: Frontiers

【 摘 要 】

Rice is a major world staple food crop, and therefore breeding improved varieties is of ultimate importance. Genotype-by-environment analyses are essential to understand the potential performance of the lines over environments. This study aimed to elucidate the stability, agronomic performance, and grain quality of elite new plant type (NPT) rice lines developed for tropical lowland areas. Elite NPT rice lines were evaluated in eight locations along with national varieties as checks. Combined analysis across environments and several stability analyses were performed. The results revealed the possibility of breeding high-yielding NPT rice varieties with different stability profiles, namely broad adaptation (IPB189-F-13-1-1 (G5), bi = 0.91), suited for favorable environments (IPB187-F-37-1-2 (G1), bi = 1.47), and adapted to marginal environments (IPB193-F-30-2-1 (G9), bi = 0.54). G1 and G5 belonged to different groups of grain characteristics, each with low and high amylose content, respectively. The highest yielding line (IPB189-F-23-2-2 (G6), 8.68 ton ha−1) had an advantage of 19.39% over the highest yielding check, i.e., Inpari 32 (7.27 ton ha−1). This increase in yield was contributed by the success of breeding with a greater 1000-grain weight (11.91%) and number of filled grains per panicle (42.37%) than Inpari 32; meanwhile, the plant height also increased by 19 %. In addition, the rank correlations among three stability parameters, sdi2, Wi2, and σi2 were positive and highly significant. This study enlightens the prospect of breeding NPT rice varieties with different adaptations in tropical lowland areas.

【 授权许可】

Unknown   
Copyright © 2023 Aswidinnoor, Listiyanto, Rahim, Holidin, Setiyowati, Nindita, Ritonga, Marwiyah and Suwarno.