Abstract
The purpose of rice breeding is to create varieties that are well adapted, highly productive, and acceptable to farmers. However, rice productivity is limited as a result of combined biotic stresses (pests/diseases). This study combines assessment by farmers with the evaluation by breeders with respect to promising rice lines within a range of environments. The aim is to investigate farmers’ preferences and to characterize the yield of promising rice lines, as well as their resistance to pests/diseases by consulting 120 farmers and breeders. This study used an oversite design replicated three times with thirteen promising lines and two varieties, which were all evaluated at farmers’ fields between December 2019 and May 2020. The Importance Performance Analysis was used to compare line performance and farmers’ expectations. Lines Gamapadi-2 and Gamapadi-4 had the highest acceptability scores based on the farmers’ preferences. The yield performances were evaluated using the Finlay–Wilkinson test and the genotypes were evaluated using environmental models (GGE biplot) to determine the most stable lines to be recommended for large-scale planting. The Finlay–Wilkinson and GGE biplot conclusion analyses also showed that the Gamapadi-2 and Gamapadi-4 lines exhibited high potential yield and stability, as well as indications of specific advantages. The results for both lines in all locations indicated no symptoms of brown planthoppers or bacterial leaf blight due to its absence during the field research. These lines in all age ranges at two sites showed no symptoms of leaf blast.
Highlights
Published: 17 June 2021Rice (Oryza sativa L.) is the most important staple food of developing countries, including Indonesia
The selection of lines with a view to yield stability across various environmental conditions is important as part of a rice breeding program [8]
The participatory varietal selection programs have been implemented in three central rice production areas of Central Java, Indonesia (Banyumas, Klaten, and Batang Regency)
Summary
Rice (Oryza sativa L.) is the most important staple food of developing countries, including Indonesia. Indonesia is the world’s third largest producer of rice [1]. Java is the largest producer of rice in Indonesia. The rice production in the last decade (2010–2019) ranged between 9.4 and 11.5 million tons per year for a harvested area of 1.68–2.01 million ha [2,3,4,5]. There are several requirements for releasing rice varieties in Indonesia, including high potential yield and biotic (pests and diseases) stress resistance [6]. The selection of lines with a view to yield stability across various environmental conditions is important as part of a rice breeding program [8]. Genotype and environmental interaction effects show that lines respond differently to variations in location, indicating that the verification of rice lines at multiple locations is necessary [9]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
