. Bulletin of the Department of Agriculture. Agriculture; Agriculture. IITHERITANCE OF WAXY ENDOSPEEM IIsT MAI^E. 41 The percentages for the three ears are , , and white. These figures are closer approximations to the Mendelian dihybrid proportion of per cent than to the expected 50 per cent white. The nature of tlie crosses, however, prohibits a diliybrid ratio. Three ears, Nos. 1610, 1615, and 1653, were all borne on plants grown from white seeds and were pollinated with plants grown from colored seeds of the hybrid Dh 234. The plants grown from the white seeds could
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. IITHERITANCE OF WAXY ENDOSPEEM IIsT MAI^E. 41 The percentages for the three ears are , , and white. These figures are closer approximations to the Mendelian dihybrid proportion of per cent than to the expected 50 per cent white. The nature of tlie crosses, however, prohibits a diliybrid ratio. Three ears, Nos. 1610, 1615, and 1653, were all borne on plants grown from white seeds and were pollinated with plants grown from colored seeds of the hybrid Dh 234. The plants grown from the white seeds could be making but one class of gametes, Ci\ and the plants grown from the colored seeds were making two classes of gametes, CR and Cr. A self-pollinated ear, Xo. 1703, was secured from the male parent of ear Xo. 1653. If the per cent of white seeds on ear No. 1653 was due to the male parent being equally deficient in both male and female gametes bearing one of the two color factors the expected per-. Peaf. /6/0 /s/S Fin. 4.—Diatrram showing the relations of ears Nos. 1610 and 1579. centage of white seeds on a self-pollinated ear would be per cent, but since the deficiency was observed only for the male gametes a percentage of per cent could be expected. The observed pro- portion on ear No. 1703 was per cent, which is not a significant departure from the monohybrid 25 per cent or the per cent indi- cated by the deficiency of colored seeds in ear No. 1653. Further analysis is also possible for ear No. IGIO, which had a reciprocal ear in No. 1579. This reciprocal ear gives a close ajDproxi- mation to the expected 50 per cent, while ear No. 1610 was below the expected by times the probable error. The difTerence be- tween these two reciprocals is ± per cent, a difference of times the pro]>able eiioi-. No analysis is possible for ear No. 1615, but for the two ears numbered 1610 and 1653 there is indicated either. Please note that these ima
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