Physico-chemical composition of sweet orange （Citrus sinensis L.） cv. blood red was determined in relation to different storage conditions and micronutrients application at department of horticulture, Agricultural U...Physico-chemical composition of sweet orange （Citrus sinensis L.） cv. blood red was determined in relation to different storage conditions and micronutrients application at department of horticulture, Agricultural University Peshawar, Pakistan during 2006-2007 and 2007-2008. The post-harvest quality of sweet orange was evaluated for 60 days storage with 20 days intervals. Fruit were harvested after the foliar application of zinc and boron in two consecutive seasons. The harvested fruits were stored at an ambient temperature （ATS） of 25 ＋ 2 ℃ and at low temperature storage （LTS） of 15 ± 2 ℃ with 60%-70% relative humidity （RH） for 60 days. Sweet oranges stored at LTS maintained better fruit quality than ATS. The foliar application of zinc and boron significantly enhanced fruit juice content, total soluble solids （TSS）, ascorbic acid （AA） and non-reducing sugar （NRS） of fruit. However, fruit juice content, TSS and AA were observed significantly higher, when the fruit was treated with high zinc （1%） and low boron （0.02%）. The percent of weight loss, disease incidence, TSS and reducing sugar （RS） increased with increasing the storage durations. A reduction was noted in fruit juice, AA and NRS with increasing the storage durations.展开更多
文摘Physico-chemical composition of sweet orange （Citrus sinensis L.） cv. blood red was determined in relation to different storage conditions and micronutrients application at department of horticulture, Agricultural University Peshawar, Pakistan during 2006-2007 and 2007-2008. The post-harvest quality of sweet orange was evaluated for 60 days storage with 20 days intervals. Fruit were harvested after the foliar application of zinc and boron in two consecutive seasons. The harvested fruits were stored at an ambient temperature （ATS） of 25 ＋ 2 ℃ and at low temperature storage （LTS） of 15 ± 2 ℃ with 60%-70% relative humidity （RH） for 60 days. Sweet oranges stored at LTS maintained better fruit quality than ATS. The foliar application of zinc and boron significantly enhanced fruit juice content, total soluble solids （TSS）, ascorbic acid （AA） and non-reducing sugar （NRS） of fruit. However, fruit juice content, TSS and AA were observed significantly higher, when the fruit was treated with high zinc （1%） and low boron （0.02%）. The percent of weight loss, disease incidence, TSS and reducing sugar （RS） increased with increasing the storage durations. A reduction was noted in fruit juice, AA and NRS with increasing the storage durations.
