APPROXIMATE GERMINATION TEST FOR NON-AFTER-RIPENED PEACH SEED

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Abstract
An approximate germination test is reported for peach seed obtainable in 7 days as compared with the normal after-ripening method of 10-12 weeks. Naked embryos, sterilized in 2% Cl solution for 30 min. and placed in sterilized 1/2 ounce bottles on 2/3% agar medium, showed varying degrees of response; namely, (A) no response, (B) cotyledons slightly spreading, (C) cotyledons spread at an angle of 75[degree], and (D) shoot and root growth developed. The degree of response in C and D taken together gives a figure which approximates closely the figure for germination secured by after-ripening similar samples in damp peat moss at 5[degree] C for 12 weeks. Various nutrients and agar concns. other than 2/3% either failed to improve the response or else proved to be inhibiting. The % of seeds germinated from fall plantings under nursery conditions agrees closely with the figures secured by the culture method prior to planting.

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