🌹 Rose

• Botanical Name: Rosa spp.
• Family: Rosaceae
• Origin: India (Northern hemisphere)
• King of flowers, National flower of England, Iran, UK.
• Symbol of beauty, to convey message of love.
• Best time for planting: End of September middle of October.
• Spacing between H.T. roses: 75 cm, Floribunda: 60 cm
• Commercial method of propagation: T or shield budding
• Best time for budding: November to February
• Rootstock:
  • Rosa multiflora (Edward rose) - most commonly used rootstock of western India.
  • Rosa indica var odorata — most commonly used rootstock in North India.
• Fruit of rose: Rose hip ^AFO-2021 – black in colour, berry type (good source of Vit-C)
• Rose seed — Acenes
• B.K. Roy Choudhary: 1st Indian Rose breeder who raised variety Dr. S.D. Mukherjee in 1935.
• B.S. Bhattachadee (Father of Rose breeding) was fine rose breeder, evoluted variety - Ramkrishnadev.
• Dr. B.P. Pal evolved 1st rose variety - Rose Sherbat.
• Bud union is most susceptible to low temperature than any other part of Rose.
• Winter chilling is necessary in flower bud formation in Rosa damascena.
• Most of varieties take about 60-65 days for blooming after pruning.
• Preservative solution: 1-3% sugar - 100-200 PPM HQC.
• In cut rose minimum wase life should be 12 days.
• Oil percentage in Rosa damascene is 0.03%.
• Green house condition
  • Day temperature 25 °C
  • Night temperature 16 °C
  • CO₂: 1000-3000 PPM.
• Topaz: Best control over powdery mildew of rose.
• To increase shelf life— Pulsing treatment is done.
• Hosur in TN ranks 2nd in the world for raising the roses.
• Pruning— technical aspect of rose breeding.
• Most costly oil— Rose oil
• Miniature roses– resistant to pest and diseases.
• Limp neck— Rose disorder
• Thornless variety of rose — Suchitra, Pusa mohit
• Ruse spp. having four florets: Rosa sericia
• Rose spp. from which yellow colour is extracted: Rose foetida
• Madien type rose: Does not require pruning.
• Flowering in hybrid tea roses: 42 days after pruning.
• Flowering in Floribundas 45 days after pruning.
• Commercial life of rose is 8 years.
• Blue pigmentation in rose is due to Delphinine.
• Blue colour rose variety is Samba.
• Major problem in rose breeding is seed setting.
• Gulkand is prepared by mixing petal and sugar in 1 : 1 ratio.
• Bluing of rose petals is due to accumulation of ammonia.

Varieties

• Grand gala: thornless variety (Popular thornless root stock)
• First Red: Mostly grown in green houses.
• Kiss
• Black magic
• Yellow river
• Konfetti
• Starlite
• Hollywood
• Vivaldi
• Frisco