Breeding fresh market tomato pure lines for off season production
2007
Nalundasan, M. A. | Pascua, M. E, Mariano Marcos State Univ., Batac 2906 Ilocos Norte (Philippines)
The development of pureline fresh market tomato cultivars was conducted in Ilocos Norte from 2000-2006. This started with the three MMSU off-season tomato F1 hybrids: Native x Line 1, Native x Line 2, Native x Line 3. These were developed into pureline cultivars through continuous selections until the desirable characteristics become stable. Stabilization was done using pedigree method from F1 up to F8 generation or until there was no longer segregation. Selections were undertaken during the vegetative, flowering and fruiting stages based primarily on the growth habit, reaction to pests, crop vigor, fruit size and shape, fruit setting, yield and yield components. The developed fresh market tomato purelines were further evaluated based on their performance on-station and on-farmers field and then select the best for off-season planting i.e., wet season. The four selected lines (MT3-25-26-4-43-16-13, MT2-18-16-6-16-4-1, MT3-25-6-18-41-14-5, and MT3-43-12-10-60-26-14) showed good performance and out-yielded the MMSU tomato hybrids. These lines produced an average yield of 37.82, 34.44, 37.22 and 37.28 t/ha, respectively. The advantage of planting purelines is its stability from one generation to the next, hence, farmers can still use the seeds for their next cropping seasons. By planting purelines, the cost of production particularly the amount allocated for seeds will be reduced. Hence, higher net income per hectare and per peso invested will be realized as compared in the planting of hybrids.
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