. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. .lamuu'y, 1921. SCIENTIFIC AGRICULTURE 27 between the ghimes as is normally the in grasses, but i^emainecl inside. Secondly, an examination of the anthers showed that they were very mudh smal- ler than the anthers of some other species of Agro- pynim w,hieh apparently were normally wind-polli- nated. These peculiarities nat^irally caused a closer investigation of the flowering process. Watching the blossoming with tihe aid of hnis, it was observed that when the flowering ghimes were in the act of d
. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. .lamuu'y, 1921. SCIENTIFIC AGRICULTURE 27 between the ghimes as is normally the in grasses, but i^emainecl inside. Secondly, an examination of the anthers showed that they were very mudh smal- ler than the anthers of some other species of Agro- pynim w,hieh apparently were normally wind-polli- nated. These peculiarities nat^irally caused a closer investigation of the flowering process. Watching the blossoming with tihe aid of hnis, it was observed that when the flowering ghimes were in the act of diverging from each other, the anthers wjiich mostly were to be found surprisingly far down in the "flower" suddenly exjjloded, bursting ojien from one end to the otiier, and sjjrinkling the pollen all over inside the flowering glumes. At the time of the ex-' plosion of the anthers the stigmas of the pistil were enclosed wiUhin the flowering glumes and conse- (luently, they caught a substantial portion of the releaMcd pollen. When tIhe glumes closed again, after tile pollination was over, two of tlie three exploded anlliers in a flower were generally found hidden at t/ie bottom of the glumes. Sometimes all three were found in ithat pasition but more often one of them was found squeezed in between the edges of the glumes, protruding more or less but never hanging outside as in most other I'''igure 3.—Western Rye Grass; liiKh-yicliliiiK varieties. It was further observed that tjie flowering process, , tihe opening up of ithe flowering glumes, the .sprinkling of pollen on the stigmas of the pistil throngli the explosion of the anthers, and the clos- ing of the glumes again, took less time in plants growing in the open' than in plants growing in the shade of trees, and also that tIhe opening up of the glumes was still more rapid in heads which had been CAit off. The pollination process was studied on quite a large number of the forms occurring in the Ed- m
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