Effect of Difference Between Day and Night Temperature on Fruit Development and Yield of Tomato
Taking tomato Solanum lycopersicumcv.‘Jinguan 5'as test material,the use of artificial controlled trial designed two average temperature(18℃,25℃),difference between day and night temperature(DIF)to 12℃(day 24℃/night 12℃,day 31℃/night 19℃),6℃(day 21℃/night 15℃,day 28℃/night 22℃),0℃(day 18℃/night 18℃,day 25℃/night 25℃)handled a total of six controlled trials,the number of different research facilities DIF tomato on young fruit setting rate,the size of fruit weight,fruit and grain yield per plant.The results showed that 18℃average temperature processing,fruit setting rate,fruit diameter,fruit weight and yield per plant were the highest under 12℃ diurnal temperature(24℃/12℃),6℃temperature difference followed,0℃temperature difference was the lowest;when the average daily temperature was 25℃,young fruit setting rate,fruit diameter,fruit weight and yield per plant was the highest when temperature difference placed6℃,12℃ temperature difference followed,0℃ temperature difference was the lowest;setting rate,fruit diameter,fruit longitudinal diameter and fruit weight,and DIF positively correlated with the mean temperature and the minimum temperature were not significant,setting rate,fruit length and daily maximum temperature was positively correlated.And it suggested that within the optimum temperature range,the greater the temperature difference,the faster the fruit development,the greater the growth,the higher the yield,it was benefit for setting fruits.