Comparison of old and new clones of potato nuclear seed stocks for tuber uniformity in the greenhouse

The plantlets of old and new clones micropropagated from nuclear seed stocks were grown in the greenhouseto compare their tuber uniformity. The o ld and new clones nested in cultivars Agria, Hermes and Granola ,were grown in C ompletely Randomized Plots design in the fall, 2012 and in the winter, 2013. The tubercharacteristics were measured and the standard analyses of variance technique were applie d and theregression co efficients of the means of new clones on the means of the old clones were estimated for tubernumber, single tuber weight (g), single plant yield (g), plot yield (g), tuber width and tuber length. The Fvalues for the clone type and clone were non significant indicating the uniformity of the means o f the old andnew clones. In addition, the b values of the regression of the means of the new clones on the means of the oldclones were found to be equal to 1 supporting the hypothesis of the uniformity of the old clones and new clonesfor tuber characteristics.

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