Relationship between Yearly Fruit Growth and Climatic Factors in 'Niitaka' Pear

Abstract

Abstract. This research was conducted to investigate the effect of climatic factors on fruit growth in 'Niitaka' pear (Pyrus pyrifolia). For ten years from 2000 to 2010, average full bloom date was April 19th and standard deviation was 4.2 days. Average fruit diameter 160 days after full bloom (DAFB) was 102.4 mm and standard deviation was 7.5 mm. Variance coefficients among climatic factors were higher in rainfall amount and sunshine hours than temperature. Only sunshine hours of climatic factors accumulated during the 160 DAFB had significant positive relationship (r = 0.68 * ) with fruit diameter 160 DAFB. Between full bloom date and fruit diameter 160 DAFB had no significant relationship. Fruit growth in 2004, as continuous rain fall and short sunshine hours, showed opposite pattern compared to that in 2009. Therefore, fruit growth of 'Niitaka' pear was more influenced by the accumulated sunshine hours than accumulated temperature.

Development of Prediction Model on Fruit Width Using Climatic Environmental Factors in ‘Fuji’ Apple

“…가장 좋은 모델은 BIO2, 9월 강수량, 4 월 최저기온 요인이 포함된 1번 모델(AICc=92.61)이며 보정된 결정계수(R 2 ) 값은 0.53이었다. 이러한 결과는 배 의 연도별 과실 횡경과 누적 일조시수의 회귀분석 결과 R 2 값이 0.551 이었다는 보고(Han, et al, 2013)와 비슷한Fig. 1.…”