D. S. Letham
1969
Citations
0
Influential Citations
13
Citations
Journal
New Zealand Journal of Agricultural Research
Abstract
Abstract Application of either zeatin or 6-benzylamino-9-(tetrahydropyran- 2-yl)purine (SD 8339) to flowers of three apple varieties resulted in the formation of fruitlets with a pronounced crown around the calyx. Several applications of these cytokinins to flowers and fruitlets of variety Cox's Orange Pippin suppressed fruit elongation, diminished the depth of the calyx depression, increased fruit density, and markedly reduced cell size. A single application of SD 8339 to flowers of the variety Jonathan increased mean individual fruit weight and promoted lobe development around the calyx of the fruit. N-(Purin-6-yl)-α-phenylglycine did not cause these effects. Application of SD 8339 to flowers of the variety Splendour promoted fruit elongation and lobe development and resulted in the development of some seedless fruit. The following stimulants of cell division applied to flowers and fruitlets of the variety Sturmer had no marked effect on cell size in the mature fruit: coconut milk, N,N'-diphenylurea, au...