| Issue |
BIO Web Conf.
Volume 158, 2025
The 4th International Conference on Sustainable Agriculture for Rural Development (ICSARD 2024)
|
|
|---|---|---|
| Article Number | 03012 | |
| Number of page(s) | 8 | |
| Section | Agro-technology | |
| DOI | https://doi.org/10.1051/bioconf/202515803012 | |
| Published online | 06 February 2025 | |
Can photosynthesis rate and transpiration rates, and shoot dry matter distribution be selection indicator for early harvest cassava (Manihot esculenta Cranzt)?
1 College of Agriculture, University of Lampung, Lampung 35145, Indonesia
2 Graduate Student of Master Agronomy, College of Agriculture, University of Lampung, Lampung 35145, Indonesia
* Corresponding author: msyamshadi@gmail.com
Indonesia is one of the big 5th for cassava production in the world after Ghana approximately 18.3 million ton in 2023. Moreover, Lampung is one of the biggest cassava areas around 224,000 ha with cassava production of 5.4 million ton or around 24 ton ha-1. The potential yield of cassava could be achieved up to 30 ton ha-1. One of the main problems for yield reduction was early harvested cassava of 5-6 months after planting (MAP). To cove with this main problem was to introduce early harvest cassava clone. Early harvest cassava clone was frequently described according to agronomy characters. It means that the use of physiological characters to determine early maturity clone is still rare. The objective of this study was to evaluate the physiology and shoot dry matter distribution to be a promising indicator for determining early harvest cassava clone. The treatment was arranged by single factor in completely randomized block design with three reps. The single factors were two cassava clones as UJ5 and local Waxy. UJ5 clone was commonly planted in Lampung province which was previously selected from Kasetsat, Thailand material. Local Waxy clone was newly introduced from Thailand, already planted and selected for six years in Lampung). The result showed that photosynthesis rate of local Waxy was higher than UJ5 at 6 MAP. Interestingly, photosynthesis rate of local Waxy was lower than UJ5 at 9 MAP. This condition was the same as transpiration rate of both local Waxy and UJ5 clones. Moreover, high assimilate production as source of local Waxy showed higher than UJ5 led to higher yield of local Waxy. It seems that local Waxy could be determined as early harvest cassava clone through variables of photosynthesis rate and dry matter distribution.
© The Authors, published by EDP Sciences, 2025
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