Mark S. Roh's research while affiliated with United States Department of Agriculture and other places
What is this page?
This page lists the scientific contributions of an author, who either does not have a ResearchGate profile, or has not yet added these contributions to their profile.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
Publications (14)
Lilium longiflomm Thunb., 'Nellie White' and a selection of L. x elegans Thunb., ('D'), were used to produce interspecific hybrids (LAIH) by cut style pollination, ovary slice followed by ovule culture. A total of 303 plants were obtained from 41 ovules through embryogenesis and plantlet regeneration from callus. In 7 to 8 months from transplanting...
Lilium longiflorum Thunb. produces white flowers and is widely grown as both a potted plant and a cut flower. L. callosum produces small red flowers and is difficult to grow in a pot. Interspecific hybrids between L. longiflorum and L. callosum were rescued through in vitro separated carpels and whole ovule culture. Hybrids were identified by exami...
Lilium longiflorum Thunb. 'Nellie White' and a selection of L. x elegans Thunb. (hybrid 'D') were used to produce interspecific hybrids by cut style pollination, separated carpel and ovule culture. Separated carpels were cultured on a Murashige and Skoog (MS) medium supplemented with NAA at 0, 0.25, 0.5, and 1.0 mg/L and kinetin at 0, 1.5, 3, and 6...
The effects of watering frequency, bulb size, temperature, and Promalin on flowering of Cyrtanthus elatus , were investigated. Bulbs must be 8 cm, in circum., with minimum of 10 leaf bases before the first inflorescence will develop from a swollen leaf base. One inflorescence was initiated for each set of 5 leaf bases. Watering frequencies did not...
Three lisianthus [Eustoma grandiflorum (Raf.) Shinn.] cultivars 0, 10, 17, 24, or 31 days from sowing were grown in 28C soil for 0, 7, 14, 21, or 28 days to determine the effects of high temperature during seedling growth on the development of rosetted plants. Increasing the duration of high-temperature exposure increased the percentage of rosetted...
In 1982 the new crops research program was initiated in the Florist and Nursery Crops Laboratory to increase the diversity of florist crop germplasm in the United States. Anigozanthos, Chamelaucium, Correa, a dwarf form of Eustoma grandiflorum ‘Little Blue Belle’, Chamelaucium, Cupressus, and other crops have been introduced to the industry with in...
Citations
... Similar results were reported by Le Nard (1972) and Beijer (1942) in tulips, where a high storage temperature (30°C) followed by a transfer to a lower temperature (20°C)resulted in an earlier flower bud differentiation. Roh and Meerow (1992) also stated that temperature plays an important role in inducing early flowering of Eucrasia bica/ar bulbs. Gilford and Rees -(1973) and Shoub and De Hertogh (1975) on the other hand, hypothesized that the lower flower shoot growth rate observed immediately after planting could be related to root growth and the possible fact that food reserves are diverted from the shoot and scales to the roots. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/282302291693570-1444317519504_Q64/Alan-Meerow.jpg)
... The number of flower buds was reported to be influenced by the bulb size [28,29]. This was because the size of the flower meristem was also affected by the bulb size and weight [30,31]. However, in this study, we graded the bulb size and used similarly sized bulbs, and thus there seemed to be no difference in the number of flower buds, regardless of storage period. ...
... The most well-known umbellate structure is the inflorescence of the family Amaryllidaceae sensu APG IV (The Angiosperm Phylogeny Group, 2016), which includes Allium (onions). The developmental morphology of a wide number of taxa in the family Amaryllidaceae has been investigated, and the morphological consensus is that the inflorescence comprises an indeterminate primary axis with cymose lateral branches (Bravais and Bravais, 1837;Blaauw, 1931;Luyten and van Waveren, 1938;Hartsema and Leupen, 1942;Mann, 1959;Roh et al., 1992;Theron and Jacobs, 1994;Kamenetsky, 1997;Slabbert, 1997;Kodaira and Fukai, 2005;Zhang et al., 2011). The number of lateral cymose branches and the number of flowers per branch can vary across the family, with multiple evolutionary events leading to uniflory (Meerow, 2010). ...
... Many species have been reported as "new cut flowers", some of them cultivated as new varieties (Armitage, 1993;Lawson and Roh, 1995;Huang, 1995) and some of them collected from the flora of each country (Considine, 1993;Van Vuuren et al., 1993) or improving their characteristics (Belhadj et al, 1998). ...
... Similar responses were also observed in the production of interspecific hybrids of Lilium longiflorum Thunb. and L. × elegans (Roh et al., 1996). ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/367763865522178-1464693146968_Q64/Rob-Griesbach.jpg)
... Iz tablice 9. se vidi da su kod ukrasnih karakteristika vrtoglava (zlatana) najbolje ocijenjene ukrasne karakteristike cvijeta i to vrlo dobrom ocjenom (3,58). Potom je ukrasnim karakteristikama habitusa dodijeljena ocjena dobar (2,98) i ocjena dovoljan za ukrasne karakteristike lista (2,24). Ispitanici bi ovu vrstu radije primijenili na javnim zelenim površinama (3,50) nego u kućnim vrtovima (2,64). ...
... Therefore cut style pollination method was recommended for future research. (Roh et al., 1996) [9] Roh et al., (1996) [9] studied the size of ovules and the number of ovules that regenerated into plantlets and flowered from the interspecific cross between L. longiflorum and L. callosum .Interspecific LC hybrids were obtained from ovaries cultured within a week after pollination. However, greatest success was obtained with ovaries cultured 4 week after pollination. ...
Reference: Breeding perspectives of Liliums
... One primary prerequisite for introducing new taxa into ornamental cultivation is to identify effective and efficient propagation methods (Roh and Lawson, 1998;Wilkins and Erwin, 1998). For example, Roh and Lawson (1998) discuss the importance of uniform germination and propagation potential while Wilkins and Erwin (1998) state the need for consistent, successful, and reproducible propagation techniques for commercialization. ...
... Species of Alstroemeria and Hippeastrum native to Brazil, as well as Griffinia (Amaryllidaceae), Neomarica (Iridaceae), and Gomphrena (Amaranthaceae), have been collected because of their showy flowers or unique growth habit (Tombolato et al., 2012). New cultivars of Eucrosia and Hippeastrum (Meerow et al., 1992;Meerow, 2009) have been developed and are being produced commercially. ...
... In lily, modern hybrid breeding exploit hybrid vigor of inter-sectional hybridization of Longiflorum, Oriental and Asiatic hybrids 47 . Breeders selects those hybrids for plant height; number of leaves, flowers and bulbils; leaf area; flower size; days to flowering and petal area which indicated that those traits were often found heterotic [48][49][50] . ...
