The performance of solo and sunset papaya cultivars under the environment of Egypt [electronic resource]: B: influence of flowering waves on pollen viability, fruit set and fruit quality.

Includes reference.

The influence of flowering waves on pollen viability. fruit set and fruit quality of Solo and Sunset papaya cultivars under the arid land environment was studied during 1996 and 1997 seasons. ResulL<; indicated that under the environmental conditions of Giza. Egypt. papaya trees started to torm flower. buds from March towards midMay. Normal flower opening appeared during April till July with a duration average of 40 days from emergence to anthesis. Pollen viability was significantly higher in Sunset cv compared to Solo cv. Pollen viability of April flowering was tound to have the lowest value compared to the other flowering waves (May. June and July) The initial fruit set (IFS) of May flowering was the highest in both cvs followed by July flowering and the lowest IFS values were always for April flowering. The highest horticultural fruit set (HFS) values were found in October (May flowering). while the lowest HFS values were found in September (April flowering) in bothcvs during both seasons. IFS and HFS values were significantly higher in Sunset cv compared to Solo cv.

Summary in Arabic.

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