Evaluation of Yield and Texture Quality in 2017 Edible Cassava Hybrids

Abstract

Evaluating the yield performance of new cassava varieties under diverse environmental conditions is a crucial step in identifying promising varieties for dissemination to farmers. The objective of this research was to evaluate the yield potential and textural quality of 2017 edible cassava hybrids across multiple environments. A randomized complete block design in three replications was conducted from May 2022 to May 2023 across six environments—Rayong, Khon Kaen, Sukhothai, Lop Buri, Kanchanaburi, and Songkhla provinces—using four edible cassava hybrids (CMRE60-03-02, CMRE60-03-13, OMRE60-01-02, and OMRE60-02-12) and two check varieties (Hanatee and DOA Rayong2). The results from combined analysis of variance indicated that the OMRE60-01-02, CMRE60-03-13, and CMRE60-03-02 lines had similar average fresh root yield of 4,794, 4,538 and 4,207 kg/rai, respectively. These three varieties showed significantly higher average fresh root yield than the two check varieties, being 70, 61 and 49% higher than Hanatee, and 57, 48 and 38% higher than DOA Rayong2, respectively. The GGE biplot analysis indicated that the OMRE60-01-02 line had the highest average fresh root yield and high yield stability, while the CMRE60-03-13 line exhibited lower yield stability but no significant difference in average fresh root yield with the OMRE60-01-02 line. Meanwhile, Hanatee exhibited the highest yield stability but the lowest yield. Steamed cassava from the CMRE60-03-13 line had a higher textural quality than that from Hanatee and OMRE60-01-02. Therefore, the hybrid cassava line CMRE60-03-13 is suitable for recommendation to farmers due to its high yield and desirable textural quality when steamed.