Apples with N contents greater than 500 mg [kg.sup.-1] and with N/Ca ratio greater than 14 (AMARANTE et al., 2010) have a higher risk for occurrence of "bitter pit
", one of the major physiological disorders.
It could be a bit of mould on a leaf or a bit of bitter pit
on the apple, but by and large apple trees are robust.
Stolp says there were some exceptions, such as cases of bitter pit
in storage for some varieties.
(2006) was clearly an exploratory analysis that was conducted to identify the response variables (nutritional attributes) that contributed most to discriminate the bitter pit
severity degrees in apple culture.
Calcium plays an important role in regulating the metabolism in apple fruit, and adequate concentration maintains fruit firmness, delays fruit ripening, lower the incidence of physiological disorders such as water core, bitter pit
, and internal breakdown (Demuth and Sundrud, 2012; Matas et al., 2009) and suppress Erwinia carotovora (Jones) incidence on apple fruits (Percival and Haynes, 2009).
We are already working on finding physiological solutions to issues like bitter pit
in current apple varieties with the gene-based information available to us and lay a foundation for improved varieties in the future through generation of sports (mutations) and breeding," Dhingra said.The Washington state contribution to the sequencing work was a unique collaboration between the cross-state Apple Cup rivals of WSU and the University of Washington.Microbiologist Roger Bumgarner's lab at the University of Washington provided the initial sequencing expertise and capability to the project, which was later complemented and replaced by sequencing expertise in the Dhingra genomics lab, who obtained the same DNA sequencing instrument used in Dr.
Honeycrisp is a high value crop but it is susceptible to the Calcium disorder, bitter pit
. The symptoms appear very late to the point of showing no visible signs at harvest but being covered in black pits within 2 days of storage.
A YOUR apples have bitter pit
, by the sounds of it.
A It is known as "bitter pit
" and is normally caused by calcium deficiency, which in turn is caused by water not getting through to the roots.
Mourners who packed into Holy Trinity Parish Church in Portrush, Co Antrim, heard how Guy Harper's death had plunged the community into "the bitter pit
of grief and anger".
Sprays of calcium chloride or calcium nitrate reduce damage from bitter pit
, scald and internal breakdown.