Vegetable Crops Questions and Answers

Answer: D

The World Vegetable Centre is located in Taiwan.

The Asian Vegetable Research and Development Center (AVRDC) was founded in 1971 at Shanhua, Tainan, in Taiwan. It was renamed the World Vegetable Center in 2008 to reflect its global work, and it keeps one of the world's largest collections of vegetable germplasm. It has a regional office in Hyderabad, India.

It is not based in China, Brazil or South Korea, which host other agricultural institutions.

Answer: D

The yellow variety of capsicum is Orobelle.

Orobelle is a yellow-fruited sweet pepper (bell pepper) hybrid, widely grown in polyhouses in India for its blocky, thick-walled yellow fruits.

The other options are green-fruited capsicums: California Wonder is an old open-pollinated variety, and Indra and Bharat are green hybrids that turn red only when fully mature.

Answer: A

Buttoning is a problem in Cauliflower.

Buttoning is the formation of small, premature curds, or buttons, on cauliflower plants that have not grown enough leaves. It happens when the plant's growth is checked: when early varieties are planted late, when old or overgrown seedlings are transplanted, or under nitrogen shortage or drought. The buttons have no market value.

Okra, chillies and melon do not form curds, so the disorder does not occur in them.

Answer: D

The CMS-based onion hybrid is Arka Kirtiman.

Onion flowers are small and bisexual, so hand emasculation is impractical for hybrid seed. The ICAR-Indian Institute of Horticultural Research, Bengaluru, used a cytoplasmic male sterile line as the female parent to produce the F1 hybrids Arka Kirtiman and Arka Lalima, which were among the first onion hybrids released in India.

Arka Pitamber and Bhima Shubra are open-pollinated varieties (a yellow and a white onion), and Pusa Madhvi is an open-pollinated red onion from IARI. None of them is a hybrid.

Answer: B

The ideal temperature for tuberisation is 18-20°C.

Potato tubers form best when night temperatures are cool, around 18 to 20 °C, together with short days. Under these conditions the plant produces less gibberellin and more of the tuber-inducing signal, so assimilates move to the stolon tips and tubers swell. Above about 29 to 30 °C tuberisation is largely inhibited and growth goes into the haulm.

10-12 °C is too cool and slows growth. 24-26 °C and 24-28 °C favour vegetative growth over tuber formation, which is why potato is a winter crop in the Indian plains.

Answer: A

The early variety of garden pea is Arkel.

Arkel is a dwarf, wrinkle-seeded variety introduced from England. It is ready for the first picking of green pods in about 55 to 65 days after sowing, and its sweet seeds make it a standard early variety for the vegetable market in India.

Lincoln and Bonneville are listed in Indian vegetable texts as mid-season varieties that take longer to the first picking, and Azad P-1 is not the textbook example of an early pea. Arkel is the standard early variety.