Influence of precipitation on the pear average fruit weight in cultivars 'Vasarine Sviestine' and 'Milievskaya Rannaya' | Nokrišņu daudzuma ietekne uz bumberu augļu vidējo masu šķirnēm 'Vasarine Sviestine' un 'Miļejevskaja Raņņnaja'
2014
Lace, B., Latvian State Inst. of Fruit-Growing, Dobele (Latvia)
Average fruit weight (AFW) is one of the most important quality parameters of pear (Pyrus communis L.) fruit that determine fruit use, price and marketing success. Fruit size is affected by genotype, thinning, and environmental conditions. Precipitation during initial fruit development stages is of high importance, especially during cell division, since the total number of cells significantly influences final fruit size. The aim of the study was to clarify the influence of precipitation on average fruit weight of pears in two cultivars. Therefore fruit evaluation data acquired during five years from pear cultivars ‘Mlievskaya Rannyaya’ and ‘Vasarine Sviestine’ grown at the Latvia State Institute of Fruit-Growing have been analysed. The data showed that the development length and the ripening period of pears depended on the genetic traits of cultivars and weather conditions in the vegetation season. Average fruit weight (AFW) of cultivars ‘Mlievskaya Rannyaya’ and ‘Vasarine Sviestine’ depended on precipitation in both: period from full bloom until fruit ripening and the period of ripening. Statistically significant negative correlations were found between AFW and precipitation in 80 days after full bloom.
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