Session 1: Cultivation of Rose
Unit 2: Cultivation of Commercial FlowerCrops-II
Textual Question-Answers
Check Your Progress
A. Fill in the Blanks
1. Approximately ……………… species of roses are native to India.
Ans: 20
2. Rose hips are a rich source of vitamin ………………
Ans: C
3. Rose hips contain ……………… times more ascorbic acid thanthose of oranges.
Ans: 20
4. The result of crossing between Dwarf Polyantha and early HTroses is ………………
Ans: Floribunda
5. The resultant class developed by crossing HTs with Floribunda isknown as ………………
Ans: Grandiflora
6. Quite cold-hardy low-growing rose, bearing large-clusteredsmaller flowers is ………………
Ans: Polyantha
7. The roses growing on its own roots are known as ………………
Ans: own-root roses
8. Complete or partial failure of rose bud opening is known as ………………
Ans: bull head
9. A phenomenon where new shoots emerging from the axillary buds ofthe previous floral stem having no floral bud is known as ………………
Ans: blind shoot
B. Multiple Choice Questions
1. Proper harvesting stage of rose is ………………(a) tight bud
(b) slightly loose
(c) half open
(d) None of these
Ans: (a)
2. Bluing of rose petals is due to ………………(a) the accumulation of ammonia
(b) more salt
(c) less sugar
(d) bacterial infection
Ans: (a)
3. Which of the following is less sensitive to chilling injury?(a) Rose
(b) Bird of paradise
(c) Gaillardia
(d) Marigold
Ans: (b)
4. Which flower is acclaimed as the ‘King of Flowers’?
(a) Tulip
(b) Rose
(c) Carnation
(d) Gladiolus
Ans: (b)
5. The time for budding in roses in North Indian plains is………………
(a) September–October
(b) November–December
(c) April–May
(d) July–August
Ans: (c)
6. Wintering of roses in India is done normally in the month of………………
(a) July
(b) October
(c) January
(d) April
Ans: (c)
7. Which of the following is a long-stemmed cut rose grown in India?(a) Raktagandha
(b) Anurag
(c) Dr. Homi Bhabha
(d) Mother Teresa
Ans: (d)
C. Subjective Questions
1. What are the deficiency symptoms of the following nutrients?(a) Nitrogen
Ans: Pale green leaves, reduced growth, and weak stems.
(b) Phosphorus
Ans: Dark green leaves with purplish tinge and poor root development.
(c) Potash
Ans: Marginal scorching of leaves, weak stems, and poor flower quality.
(d) Boron
Ans: Dieback of growing points, malformed buds, and brittle leaves.
(e) Zinc
Ans: Short internodes, small leaves, and rosetting of shoots.
2. Discuss the classification of rose plants according to their utility.
Ans: Roses are classified based on utility into cut flower roses, gardenroses, pot roses, climbers, ramblers, and landscape roses.
3. Describe the cultural operations in rose.
Ans: Cultural operations include pruning, pinching, disbudding, irrigation, fertilization, weeding, and plant protection practices for healthy growth andquality flower production.
4. Describe the important insect-pests and diseases of rose.
Ans: Major insect pests include aphids, thrips, mites, and beetles. Important diseases are powdery mildew, black spot, dieback, and rust.
D. Match the Columns
Ans:
1. Super Star — (d) Grandiflora
2. Pusa Pitamber — (b) HT
3. Gold Medal — (b) HT
4. Twinkle Twinkle — (e) Miniature rose
5. Pusa Barahmasi — (c) Polyantha
6. Albertine — (f) Climber
