13/7/19 1502098 NTIS accession number: DE91701406/XAB soshiki baiyo ni yoru shubyo tairyo zoshoku gijutsu no kaihatsu. 1. Ichigo callus no keisei to saibunka ni oyobosu shokubutsu hormones no eikyo. (Development of technology for seedling propagation by tissue culture. 1. Effect of plant hormones on strawberry callus formation and their regeneration)

1991 ◽  
Vol 9 (2) ◽  
pp. 347
Author(s):  
Rina Arimarsetiowati

One of the propagation technique for coffee plant production is tissue culture. Tissue culture technique for Coffea arabica L. faces some problems, mainly in the planlet formation regenerated from explants. The objective of this experiment was to examine the effect 2,4-D and 2-ip combination on the formation of direct somatic embryogenesis of Coffea arabica L. in leaves explant. Auxin (2,4-D) and cytokinin (2-ip) concentrations of, respectively, 1; 5 µM and 5; 10; 15; 20 were used as treatments. This research was conducted using completely randomized design with 10 replications. Observation to induce somatic embryos was done by quantitatively on number of callus from explant and number of embryogenic callus. Beside that, observation by qualitative descriptive was also done on deve lopment of embryogenesis. The results showed that Arabica coffee leaves explant of AS 2K clones could be induced in all medium combination except 5µM 2,4-D and 20µM 2-ip combination. Arabica coffee leaves explant of S 795, Sigararutang and AS 1 varieties could be induced in all medium combination. The highest frequency of callus formation was found in AS 2K, Sigararutang and AS 1 varieties on medium containing 1µM 2,4-D in combination with 10µM 2-ip, whereas for the S 795 variety on medium containing 5µM 2,4-D in combination with 10µM 2-ip. The highest frequency of embriogenic callus in all Arabica coffee variety could be reached on medium containing 5µM 2,4-D in combination with 15µM 2-ip. Key words : Coffea arabica L., somatic embryogenesis, 2,4-D, 2-ip, tissue culture, leaves, callus embryogenic.


2021 ◽  
Vol 9 (2) ◽  
pp. 109-115
Author(s):  
Ahmad Saifun Naser ◽  
Muhammad Wisnu

Availability of quality seeds in production of krisan (Chrysanthemum morifolium Ramat cv Dewi ratih) cultivation is still rare, therefore research on seed multiplication through tissue culture is needed. The media used in tissue culture is relatively expensive for home industry. This study aims to determine the respond of leaf and stem explants using foliar fertilizers (Growmore, Gandasil D and Mutiara) as an alternative media for callus inductions. This study used a Completely Randomized Design (CRD) consisted of 4 treatments: P0: ½ MS + 0,25 mg/l BAP, P1 (Growmore + 0,25 mg/l BAP), P2 (Gandasil D + 0,25 mg/l BAP), P3 (Mutiara + 0,25 mg/l BAP). The variables observed in this study included callus appearance time, callus color and callus texture. The result of this study indicated that the use of BAP (6-Benzyl Amino Purine) affected the time of callus formation and callus morphology. Callus was formed on leaf explants 13 days after planting while on stem explants 7 days after planting and compact texture. Growmore + 0,25 mg/l BAP treatment yields the best callus on leaf explant, while Gandasil D + 0,25 mg/l BAP treatment yields the best callus on stem explant.


Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 929
Author(s):  
Carloalberto Petti

Tissue culture is an essential requirement in plant science to preserve genetic resources and to expand naturally occurring germplasm. A variety of naturally occurring and synthetic hormones are available to induce the processes of dedifferentiation and redifferentiation. Not all plant material is susceptible to tissue culture, and often complex media and hormone requirements are needed to achieve successful plant propagations. The availability of new hormones or chemicals acting as hormones are critical to the expansion of tissue culture potentials. Phloroglucinol has been shown to have certain hormone-like properties in a variety of studies. Ornithogalum dubium, an important geophyte species, was used to characterise the potential of phloroglucinol as the sole plant-like hormone in a tissue culture experiment. Tissue culture, plant regeneration, total phenolic and genetic variability were established by applying a variety of methods throughout long-term experiments. Phloroglucinol did induce callus formation and plant regeneration when used as the sole supplement in the media at a rate of 37%, thus demonstrating auxin/cytokines-like properties. Callus formation was of 3 types, friable and cellular, hard and compact, and a mixture of the two. The important finding was that direct somatogenesis did occur albeit more frequently on younger tissue, whereby rates of induction were up to 52%. It is concluded that phloroglucinol acts as a “hormone-like” molecule and can trigger direct embryogenesis without callus formation.


1983 ◽  
Vol 61 (3) ◽  
pp. 639-641 ◽  
Author(s):  
Y. C. Chien ◽  
K. N. Kao

Triticale anthers with pollen at middle to late uninucleated stages were cultured individually in Falcon micro test II tissue culture plates. The results indicate that when the anthers were cultured in the same growing conditions the differences in pollen callus formation among anthers from the first and second florets in the same spikelet were not statistically significant, whereas the differences in callus formation among anthers from different spikes (or plants) were statistically significant. These results suggest that comparisons of treatment effects should be made between samples consisting of anthers from the same spikelet only. Benzyl adenine (BA) and higher osmolality enhanced pollen callus induction, while a higher concentration of organic acids suppressed it. Under optimal conditions 31% of anthers formed callus, while the number of pollen calli per 100 seeded anthers was as high as 130. The pollen calli were able to develop into plants; however, the frequency was relatively low.


2018 ◽  
Vol 6 (4) ◽  
pp. 1
Author(s):  
Dwi Sucianingtyas Sukamto ◽  
Lila Maharani ◽  
Siti Amalia ◽  
Sholeh Avivi ◽  
Didik Pudji Restanto

Rubber plant (Hevea brasiliensis Muell Arg) is one of the important plantation commodities in Indonesia because of its role as a source of income. It stimulates the economic growth around the rubber plantation area. The propagation of rubber is still using conventional methods like grafting. The technique of tissue culture through callus induction is one of the alternatives of mass propagation of rubber seedling with quick and efficient time. The sterilization method is very important to determine the success of tissue culture techniques. Therefore, the aim of this research is to know the best method of sterilization and callus formation in rubber explants. The basic media used were WPM and MS, with BAP of 2 ppm and NAA 0.1 ppm. The best result of sterilization is by soaking 5% fungicide solution for 5 minutes, 5% Clorox solution for 15 minutes, betadin 10% solution for 5 minutes, and finally it rinsed with sterile water three times. The best medium uses WPM medium for callus induction, with 0.5 cm callus length and embryonic callus. In contrast, the MS medium has 0.4 cm callus length and non embryonic callus.


2014 ◽  
Vol 644-650 ◽  
pp. 5407-5410
Author(s):  
Hui Fang Chi

s. The cotyledons, Internodes, leaves and stems of sweet broad pea were studied on tissue culture. Research results show that: The ability of different explants for callus formation and adventitious bud differentiation in different culture medium is different. The callus formation rate and sprouting rate of Internodes is significantly higher than other explants, which is a ideal material for tissue culture. The callus formation rate of Internodes was 100% in MS +BA1.0 mg/L+NAA 1.0 mg/L and MS+ 2, 4-D 0.5 mg/L; The bud differentiation is best at the medium of MS+ 6-BA 2 mg/L, which reached 86.7%; the rooting rate was 83.3% at the medium of MS+ NAA 3mg/L. The study provides a experimental basis for further study on the plant regeneration in the sweet broad pea.


HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 528a-528
Author(s):  
Sharon A. Bates ◽  
John E. Preece ◽  
John H. Yopp

Both greenhouse-grown white ash plants derived from tissue culture and rooted microshoots in high humidity trays were inoculated with 11 tumor-inducing Agrobacterium strains. Eight strains stimulated mutative gall formation. Plants inoculated with strain A281 exhibited a higher frequency of callus formation (greenhouse-22.2%; microshoots-18.8%) than other strains at the site of the wound. Therefore, strain A281 was used to inoculate seed and seedling explants in vitro. Explants were placed on MS medium containiner no plant growth regulators and inoculated at 0, 3, 5, 7, or 10 days after initiation. Plants inoculated at 10 days showed a higher frequency of callus formation (16.4%) than with earlier inoculations. Also, rewounding of the explant at inoculation resulted in a higher frequency of callus formation (11.3%) compared to not rewounding the explant (3.9%).


HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 655f-655
Author(s):  
Frank B. Matta ◽  
Patricia Quesada

Differential thermal analysis, electrolyte leakage, tetrazolium stain test, and the “feeder plate” tissue culture regeneration technique were used to determine cold hardiness of passion fruit and maypop. The “feeder plate” technique showed that yellow passion fruit did not regenerate at 0C, -3C, and -6C while purple passion fruit showed callus formation at all temperatures. The remaining tests gave similar lethal temperatures for the two species. Lethal temperatures were -9C to -10C, -10C to -I2C, and -11C to -13C for yellow and purple passion fruit and maypop, respectively.


2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Yasinta Ratna Esti Wulandari ◽  
Laurensia Danis Anggradita

Abstract. Wulandari YRE, Anggradita LD. 2020. Variation of axillary growth as respond of Morus spp. micropropagation using various concentrations of Indonesian local solid substance. Biodiversitas 21: 80-85. The difficulties of growing Morus spp. makes it become one local plant that hard to cultivate conventionally even though it’s a beneficiary plant. Hence cultivation Morus spp. through tissue culture technique could help growing this plant. This research is aimed to design the optimal condition for micropropagation of local Morus spp. (Morus bombycis var. lembang, M. cathayana, M. multicaulis, and M. alba var. kanva-2) using agar-agar as Indonesian local solid substance. This solid substance is used as its cheap and easy to find compared to other solid substances. This research used MS medium supplemented with 0.1 ppm naphthalene acetic acid + 1.0 ppm benzyl aminopurine and various concentration of agar-agar (0.6%, 0.8%, 1.0%). Growth rate, axillary bud length and number, leaf number, callus formation and contamination were observed in this research. All those concentrations could be used for micropropagation of Morus spp. Agar concentrations of 0.8 and 1.0% showed better results than 0.6% because it showed the highest results.


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