TY - JOUR AU - Butler, T. A. AB - Published June, 1950 NOTES 31 1 could be an effect of polyploidy; another, that resist- operation of vigorously rubbing the sample of seed ance may have developed independently of chromo- in a bag and then separating the seed from the chaff some number in certain localities in Mexico and Texas through sieves or an air cleaner. Needless to say, this where the strains were originally collected. Evidence method of cleaning the sample is unsatisfactory and slow. for these possibilities could be obtained only by the use of artificially produced polyploids (as with col- In an attempt to remove the awns mechanically and chicine) and by testing more natural populations than clean the sample simultaneously, an apparatus was were available here. constructed for use at the Wyoming Agricultural Ex- Because of discontinuance of the work, these ques- periment Station. tions cannot be investigated at the present time, and The machine consisted of a 4-inch pipe, 19 inches therefore the available evidence is published in the long, inside of which was mounted a %-inch shaft. lorm of this note. - D. U. GERSTEL, formerly Associate A number of beaters were made of 1-inch strap iron, center drilled, and cut to lengths TI - De‐Awning Machine for Experimental Barley Samples JF - Agronomy Journal DO - 10.2134/agronj1950.00021962004200060010x DA - 1950-06-01 UR - https://www.deepdyve.com/lp/wiley/de-awning-machine-for-experimental-barley-samples-MfTr2ObAEv SP - 311 EP - 311 VL - 42 IS - 6 DP - DeepDyve ER -