Exanthema in citrus' tress is a reserves of the deficiency of
A. Copper
B. Boron
C. Molybdenum
D. Zinc
Answer: Option A
Solution(By Examveda Team)
Exanthema in citrus trees is a reserve of the deficiency of Copper.The branches, especially the terminal ones, the leaves, and the fruit are all attacked. As a general rule, there is no apparent effect on the roots. The symptoms of exanthema are variable. Severely affected trees carry a large quantity of dead wood.
The dropping, blemishing and cracking- of fruit form one of the most common symptoms. Brown glossy areas occur particularly on one side of the fruit. The surface may show small dots of gum.
Copper treatment may take two forms. The trees may be sprayed with a weak Bordeaux mixture, preferably at blossoming time.
Related Questions on Genetics and Plant Breeding
Genetic code was discovered by
A. Khorana and Methaei
B. Flemming and Methaei
C. Holley, Nirenberg and Khorana
D. Holley and Nirenberg
Progeny of breeder seed is referred to as
A. Breeder seed
B. Nucleus seed
C. Foundation seed
D. Certified seed
Molecular basis of organ differentiation depends on the modulation in transcription by
A. RNA pol
B. Transcription factor
C. Anticodon
D. All of the above
The phenomenon of linkage was first observed by
A. Bateson and Punnet
B. Nilson
C. Hugo de Vries
D. Mendel
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