Horticulture - Study Mode
[#791] Paradox is a rootstock of
Correct Answer
(C) Plum Walnut
Explanation
Solution: Paradox is a rootstock of Plum Walnut . Rootstocks are bred to grow in different soil types and conditions and provide the best anchorage, vigor and resistance or tolerance to soil borne pests and diseases. Paradox seedlings are more vigorous and less susceptible to Phytophthora root rot but very susceptible to crown gall.
[#792] The seed required for raise seedling for planting of one hectare crop of cabbage
Correct Answer
(C) 400 - 500 gm
Explanation
Solution: Cabbage ( Brassica oleracea var capitata) is a small, leafy biennial producing a compact globular mass of smooth or crincled leaves wrapped over each other known as head. The outer leaves are generally larger than the inner. The stem is short and stout. Plants flower generally after winter. The seed required to raise seedling for planting of one hectare crop of cabbage is 400 - 500 gm. Prior to sowing seeds are treated with fungal culture of Trichoderma viride (4 g/kg of seed) or Thiram (3 g/kg of seed) to avoid damage from damping-off disease.
[#793] Bleached ginger is treated with
Correct Answer
(C) Lime solution
Explanation
Solution: Bleached ginger is treated with Lime solution . Bleached ginger is produced by dipping scrapped fresh ginger in a slurry of slaked lime, Ca(OH) 2 , (1 kg of slaked lime/120 kg of water) followed by sun drying. As the water adhering to the rhizomes dry, the ginger is again dipped in the slurry. This process is repeated until the rhizomes become uniformly white in colour. Liming gives ginger a better appearance and less susceptibility to the attack of insect pests during storage and shipping.
[#794] Colour blindness genes are located on
Correct Answer
(B) X chromosomes
Explanation
Solution: Colour blindness genes are located on X chromosomes . It follows X-linked recessive inheritance. Colour blindness is the decreased ability to see colour or differences in colour. It can impair tasks such as selecting ripe fruit, choosing clothing, and reading traffic lights. Colour blindness is a sex-linked disease. This means it is a gene that occurs only on the X chromosome, which is passed to the child by the mother. The Y chromosome, which is passed to the child by the father, does not carry the defective gene.
[#795] First time cytoplasmic genetic male sterility is used in
Correct Answer
(A) Onion
Explanation
Solution: First time cytoplasmic genetic male sterility is used in Onion . Background. Joseph Gottlieb Kölreuter was the first to document male sterility in plants. In the 18 th century, he reported on anther abortion within species and specific hybrids. It is total or partial male sterility in plants as the result of specific nuclear and mitochondrial interactions. Cytoplasmic male-sterility (CMS) has been used in F1 hybrid seed production in onion (Allium cepa L.). Two types of CMS (CMS-S and CMS-T) have been reported in onions. Almost complete mitochondrial genome sequences of normal, CMS-T and CMS-S cytoplasm types have been obtained in previous studies.