Due to climate change, drought problems are on the increase in Malawi. For this reason, breeders are developing new sweet potato varieties with an emphasis on drought tolerance. This project aims at research-farmer participatory screening and selecting of orange fleshed sweet potato genotypes for drought tolerance. The selected lines/genotypes will be used as:
(1) Parental material for hybridization
(2) Drought tolerant genotypes for production in Malawi
The trial has two water levels; water-stressed and non water-stressed. In the stressed, irrigation is stopped at six weeks after planting while in non stressed, irrigation continues up to near physiological maturity.
This project is testing 22 lines, which includes lines introduced from Mozambique. Data will be collected at 3 weeks intervals from the sixth week after planting up to physiological maturiry.
- The One Protocol (Phi2, PSI, NPQ) II
The One Protocol to rule them all! Phi2, PSI, NPQt, combined!
Changes from previous The One protocol: - no longer outputs signal from the far red period, which simplifies the signal output for the user - changed distance between measuring pulses from 10,000 to 2,000 which improves measurement resolution - has an initial stabilization peri...
- Chlorophyll content (SPAD) III
REQUIREMENTS: Firmware v0.41 or higher. Measures transmission at 940nm and 650nm in order to determine the 'greenness' of a leaf, an indicator of chlorophyll content and nitrogen content. The 940 is used to account for leaf thickness. Improvements over Chlorophyll content (SPAD): - performs 3 different spads at 3 intensities for thin and thick ...
- Stress (Multiple Choice)
- Rep (Multiple Choice)
- Weeks after planting (Short Answer)
- Variety (Multiple Choice)
- leaf position (Multiple Choice)
- Year (Multiple Choice)
- site (Multiple Choice)