. Journal of Agricultural Research. Perfect flowered ears. Staminate spikes White pericarp . Tassels without branches. Stature. Normal. Per cent. 27. o .6 26. 2 20. 9 2. 2 PE. I. 26 . 22 .42 Dwarf. Percent. PE. lOOOO 4. 2 2-3 Brachytic. Per cent. 27-9 4-SS 18. a PE. 2-3 I. 21 1-45 4-36 -58 Totalpopulation. Percent. Ii6- 2 PE. -97 .98 I. 14 I. 49 .84 INHERITANCE OF SIZE CHARACTERS As was to be expected, the height of the plants as measured in deci-meters showed a trimodal distribution, the dwarf and brachytic plantsfor
. Journal of Agricultural Research. Perfect flowered ears. Staminate spikes White pericarp . Tassels without branches. Stature. Normal. Per cent. 27. o .6 26. 2 20. 9 2. 2 PE. I. 26 . 22 .42 Dwarf. Percent. PE. lOOOO 4. 2 2-3 Brachytic. Per cent. 27-9 4-SS 18. a PE. 2-3 I. 21 1-45 4-36 -58 Totalpopulation. Percent. Ii6- 2 PE. -97 .98 I. 14 I. 49 .84 INHERITANCE OF SIZE CHARACTERS As was to be expected, the height of the plants as measured in deci-meters showed a trimodal distribution, the dwarf and brachytic plantsforming a group at the low end of the scale. The frequency distributionfor this character is shown in figure i and their relative heights aresho^vn in Plate 5. In the cross between dwarf and anther ear, reported by the Emersons,where normal stature also was restored in the Fj, the distribution withrespect to height shows the anther ear and normal segregates to be more —23 2 302 Journal of Agricultural Research Vol. XXV, No. 7. <^ A/£r/<p/-/7^ /A^ z?/Erc//W£:r^M5 Fig. I.—Frequency distributions for plant height. Shaded portion, dwarf plants: sohd lines, brachy-tic plants; broken lines, normal plants. The square marked X represents a nlant classed as normal .thesquare with horizontal lines represents a plant classed as brachytic. Aug. 18, 19^3 Inheritance oj Dwarfing in Maize 303 nearly of the same height, while the dwarf segregates are much smallerwith no overlapping (5). This is different from the brachytic-dwarfhybrid, where the brachy tic and dwarf segregates form one group and thenormals the otlier. An examination of the height data shows thatbrachytic occupies with respect to stature a position intermediate betweenanther ear and dwarf, approaching the dwarf stature rather more closely
Size: 1176px × 2124px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidjournalofagricul25assouof
