Improved technique for treating seed dormancy to enhance germination in Rosa × hybrida

Nadeem, Muhammad Ather; Riaz, Atif; Younis, Adnan; Akond, Masum; Farooq, Amjad; Tariq, Usman

doi:10.3906/bot-1204-35

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Rosehip achenes are covered by a thin testa and a hard pericarp that contain many inhibitors. Therefore, the structure of achenes or thickness of endocarp in pericarp plays an important role in inducing seed dormancy and limiting germination in a significant manner as reported by Nadeem et al (2013) in Rosa × hybrida. Their achene structure is fully under the genetic control of, number of environmental factors including coldness, temperature, humidity at the time of seed maturity, and photoperiod (Gudin et al, 1990).…”

Section: Discussionmentioning

confidence: 97%

“…Nadjafi et al (2006) and also support the idea and used H2SO4 scarification ensued by GA3 treatment for 48 hands chilling (5°C) for 14 days to break seed dormancy of T. polium and F. gummosa Seeds. Nadeem et al (2013), treated seeds to warm temperature for 30 days ensued by scarification and cold treatment for 60 days to induce seed germination in Rosa × hybrida. Cold-high temperature shocks could vary during different seasons due to a number of reasons like stratification treatment period, habitat of plants, and the species.…”

Section: Discussionmentioning

confidence: 99%

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Application of multiple strategies to efficiently break seed dormancy of permanently odd pentaploid rose hip (Rosa canina l.) under in vitro conditions

Hajyzadeh

2022

International Journal of Agriculture Environment and Food Sciences

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Rosehip (Rosa canina L.) is an important medicinal, and ornamental plant species with high commercial value. Its sugars, phenolics, organic acids, water-soluble vitamins, and mineral contents composition varies depending on environmental conditions and genetics. The plant is also used as a perfect rootstock for many rose cultivars. Seed proliferation is extremely difficult because of multiple endogenous and exogenous dormancy factors. There is a need to breed standard rosehip cultivars rootstock developments with desired characteristics and outperforming yields in fields. The study aimed to break the seed dormancy of rosehip under in vitro conditions by application of multiple strategies in an efficient manner. The seeds were treated with different doses of GA₃, scarified mechanically, stratified on agar solidified MS medium containing GA₃ singly or in combinations of the two each or three treatments, and subjecting them to the regulated physiological treatment of alternating warm/chilling and cold/dark treatments in parallel for 21 d ensued by 18 d warm/light treatments. It was noted that the rosehip seeds could be germinated variably if the scarified seeds were stratified on agar solidified MS medium with or without GA3. Optimum seed germination (80.00- 85.00%) was noted when the three treatments were combined and the seeds were subjected to regulated and alternating warm and chilling treatments for 21 d leaving them for 18 d in warm/light. These results are very important and could be utilized in breeding and multiplication programs to develop new rosehip fruit and rootstock cultivars.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Application of multiple strategies to efficiently break seed dormancy of permanently odd pentaploid rose hip (Rosa canina l.) under in vitro conditions

Hajyzadeh

2022

International Journal of Agriculture Environment and Food Sciences

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Effect of various stratification regimes on seed germination in cold-hardy garden roses

Sandhu¹,

Conev²

2016

Acta Hortic.

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Callogenesis and production of anthocyanin and chlorophyll in callus cultures of vegetative and floral explants in Rosa gallica and Rosa hybrida (Rosaceae)

Tarrahi¹,

Rezanejad²

2013

Turk J Bot

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Callogenesis using vegetative (leaf, stem, petiole) and floral (petal, pistil, anther) explants of Rosa gallica and R. hybrida was investigated using different combinations of 2,4-dichlorophenoxyacetic acid, 6-benzylaminopurine, and gibberellic acid on modified Murashige and Skoog medium. The highest callogenesis was obtained on Murashige and Skoog medium containing ratios of 2 and 3 mg L -1 of 2,4-dichlorophenoxyacetic acid to 1 mg L -1 of 6-benzylamino purine in both species depending on type of explant. Stem explants in R. gallica initiated callus after 4 days while the other explants in R. gallica and all explants in R. hybrida showed the greatest percentage of callus initiation after 8 days. The callus growth rate showed much more progressive callus growth respectively on leaf and stem explants in both species. The highest callus volume was achieved after 2 months from vegetative explants and after 2.5 months from flower explants in both species. The highest anthocyanin and chlorophyll yield was produced in vegetative calluses of R. gallica but their content was less in flower calluses. In R. hybrida, the highest value of pigment was observed in calluses from leaf and stem. It is noteworthy that anthocyanin content in different calluses, especially vegetative ones in R. gallica, was much higher, while chlorophyll concentration was somewhat more in calluses derived from explants of R. hybrida.

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Improved technique for treating seed dormancy to enhance germination in Rosa × hybrida

Cited by 3 publications

References 31 publications

Application of multiple strategies to efficiently break seed dormancy of permanently odd pentaploid rose hip (Rosa canina l.) under in vitro conditions

Application of multiple strategies to efficiently break seed dormancy of permanently odd pentaploid rose hip (Rosa canina l.) under in vitro conditions

Effect of various stratification regimes on seed germination in cold-hardy garden roses

Callogenesis and production of anthocyanin and chlorophyll in callus cultures of vegetative and floral explants in Rosa gallica and Rosa hybrida (Rosaceae)

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