Horticulture - Study Mode

[#76] Citrus fruit variety to be patented for the first time is
Correct Answer

(B) Ruby

Explanation

Solution: The citrus fruit variety is to be patented for the first time in Ruby. The 1929 U.S. 'Ruby Red' (of the 'Redblush' variety) was the first grapefruit patent.
The 1929 'Ruby Red' patent was associated with real commercial success, which came after the discovery of a red grapefruit growing on a pink variety. These are slightly flattened, globular-shaped fruits with yellow-orange rinds and a sweet, tart flavour profile. This summer citrus tree bears fruit from mid-June to mid-September, making them a popular late summer treat to beat the heat.

[#77] Highest rate of ethylene synthesis is seen in
Correct Answer

(C) Passion fruit

Explanation

Solution: The highest rate of ethylene synthesis is seen in Passion fruit . Passion fruits are the highest ethylene producers among all fruits with a production range of 160 - 370 µl/kg hr at 20°C (68°F) at their climacteric peak. Exposure of mature-green passion fruits to 100 ppm ethylene for 1 - 2 days accelerates their ripening.

[#78] Red pigment in tomato is due to
Correct Answer

(A) Lycopene

Explanation

Solution: The red pigment in tomatoes is due to lycopene . Lycopene is a type of organic pigment called a carotenoid. It is related to beta-carotene and gives some vegetables and fruits (e.g. tomatoes) a red colour. Lycopene is a powerful antioxidant that might help protect cells from damage. Lycopene is a powerful antioxidant with many health benefits, including sun protection, improved heart health and a lower risk of certain types of cancer.

[#79] Pusa Hybrid-9, a hybrid of . . . . . . . . crop was released from IARI, New Delhi, India.
Correct Answer

(C) Brinjal

Explanation

Solution: Pusa Hybrid-9, a hybrid of the Brinjal crop was released from IARI, New Delhi, India.
The fruit of this variety are oval round, glossy attractive, dark purple, and peduncle partially pigmented. The average weight is 300g. Takes 90 days from sowing to 1 st Picking. The average yield is 670 q/ha. Recommended for Gujarat and Maharashtra in 1997.

[#80] The uniform flowering in pineapple can be induced by application of
Correct Answer

(C) 25 ppm Ethephon + 2% urea

Explanation

Solution: The uniform flowering in pineapple can be induced by the application of 25 ppm Ethephon + 2% urea . Ethephonis the active ingredient in etherel. Ethephon at a concentration as low as 25 ppm in combination with urea (2%) was able to induce more than 90% flowering after 50 days of treatment. The addition of either urea or calcium carbonate increased the effectiveness of ethephon for the induction of flowering.