
TY  - JOUR
A1  - Treeby, MT 
A1  - Storey, R 
A1  - Bevington, KB 
T1  - Rootstock, seasonal, and fruit size influences on the incidence and severity of albedo breakdown in Bellamy navel oranges
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1995
VL  - 35
IS  - 1
SP  - 103
EP  - 108
KW  - 
UR  - https://doi.org/10.1071/EA9950103 
N2  - The effect of stock and fruit size on the incidence and severity of albedo breakdown in fruit from Bellamy navel orange trees grafted onto 7 rootstocks was studied over 3 seasons. The rootstocks could be rated, from lowest to highest, according to the proportion of scion fruit showing some degree of albedo breakdown as follows: sweet orange < Cleopatra mandarin < trifoliate orange < Carrizo citrange = Troyer citrange < rough lemon < Rangpur lime. Rootstock strongly influenced fruit size distribution, and expression of albedo breakdown varied according to fruit size, but no fruit size x rootstock interaction occurred. Also, generally rootstock did not interact with year to affect the incidence and severity of albedo breakdown in Bellamy navel orange. Smaller fruit (<62 mm in diameter) had a lower incidence of albedo breakdown and the symptoms were less severe than for larger fruit. Very large fruit (>79 mm) had a lower incidence than medium (62-70 mm) and large fruit (71-79 mm). The proportion of fruit exhibiting symptoms of albedo breakdown was not positively related to crop load, and despite removal of the effect of crop load, season remained a strong influence on the appearance of albedo breakdown, indicating that seasonal factors, such as summer temperatures, may also be important in the development of albedo breakdown. 
ER  -

