Graduate Thesis Or Dissertation
 

The effect of source and size of parent tuber on yield of the Russet Burbank and Kennebec potato

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  • Samples of Russet Burbank and Kennebec seed potatoes used by Oregon growers were grown in replicated plots at Klamath Falls, Prineville and Corvallis. Observations were made of total yield, yield of U.S. No. 1 tubers and number of stems produced per plot. Total yields of the Russet Burbank variety were significantly different at the Klamath Falls and Prineville locations, the lowest producing entry yielding 50% of the highest. Total yields of the Kennebec variety were significantly different at the Corvallis location but not at Klamath Falls. Yields of U.S. No. 1 tubers were not significantly different except in the Kennebec variety at the Corvallis location. The number of stems per plot in the Russet Burbank variety were found to be significantly different and to have a positive correlation with total tuber yield. When entries were grouped by state or area of production, high as well as low producing entries were found among all groups. A study was made of the effect of parent tuber size on number of buds per seed piece, yield and stems produced per plot. A uniform one and one-half ounce seed piece was cut from a four, six and eight ounce parent tuber and results compared with a two ounce whole seed. The whole seed had 88% more buds than the seed piece cut from a four ounce tuber in the Kennebec variety and 41% more in the Russet Burbank variety. There was no significant difference in number of buds among the cut seed, although the seed piece cut from eight ounce tubers tended to have fewer buds than the seed from the four and six ounce tubers. There was no significant difference in yield among seed from various size parent tubers. The whole seed in the Russet Burbank variety produced a significantly higher tuber yield.
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