Effects of 3,5,6-trichloro-2-pyridyloxyacetic acid on fruit size and yield of Valencia oranges (Citrus sinensis Osb.)
Yükleniyor...
Dosyalar
Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wfl Publ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The Valencia orange is a high quality fruit grown in Turkey; however, small fruit size resulting in poor packouts is common in Valencia oranges. Small fruit size is the main factor limiting the marketing of Valencia oranges; thus, synthetic auxins are commonly used to enhance the size of citrus fruit. The objective of the present study was to observe the effects of 3,5,6-trichloro-2-pyridyloxyacetic acid (3,5,6-TPA) on fruit size, yield and quality of Valencia oranges from 29-year-old trees budded on sour orange rootstock in Adana, Turkey in 2006. The application of 3,5,6-TPA to the entire tree was from 8(th) to 11(th) week after anthesis during June drop (JD). Following 3,5,6-TPA treatments, different combinations were used in the experiment: T-1 2 tablets per 100 litres applied just after the end of June drop (JD), T-2 2 tablets per 100 litres applied 5-7 days after the end of JD, T-3 3 tablets per 100 litres applied 5-7 clays after the end of JD, T-4 4 tablets per 100 litres applied 5-7 days after the end of JD, T-5 3 tablets per 100 litres applied 10-14 days after the end of JD and control trees receiving no 3,5,6-TPA (T-0). As a result, all treatments with 3,5,6-TPA reduced fruit yield, except for trees treated at the highest rate (T5). Compared to control trees, all applications of 3,5,6-TPA increased the number of large, commercially valuable Valencia oranges (>70.00 mm and 65.01-70.00 mm). Except for the titratable acid content (TA) and total soluble solid/TA ratio (TSS/TA), the internal characteristics of the fruit were not affected by treatment with 3,5,6-TPA. Generally, total acidity was decreased by treatment with 3,5,6-TPA. The results of the present study revealed that 3,5,6-TPA can be used to improve the size of Valencia fruitlets during the June drop.
Açıklama
Anahtar Kelimeler
Auxin, fruit quality, Valencia orange, plant growth regulators
Kaynak
Journal of Food Agriculture & Environment
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
9
Sayı
1
