Produksi Bibit Kelapa Kopyor True-to-type Melalui Teknik Kultur Embryo

Kopyor is one of the most valuable germplasm in Indonesia. However, the production of true-to-type seedlings with 100 % kopyor nuts is still limited because the nut would not germinated naturally. The only technique available to solve the problem is by using embryo culture technique. However, the technique is limited especially on the low of success rate after acclimatisation step (less than 40 %). Therefore, we report a new breakthough technique for producing kopyor seedling using embryo culture technique especially on acclimatisation step. Our results showed that the best acclimatisation step could be done by culturing 4-month old seedlings in a culture room with 14 hour light with intensity around 1400 lux and 10 hours in the dark. Seedlings were cultured for three months in mini growth chamber with 95 % relative humidity level and temperature around 26 to 28 0C. The survival rate after acclimatisation step on the seedlings with full root was more than 95 %, while for the seedlings without root was c.a 90 %. The acclimatized seedlings then underwent to screenhouse for 1 year befor being field planting. Up to now, more than 170 seedlings of Kopyor have been transfer to the field for developing seed garden of Kopyor in Purwokerto, Indonesia. In the future, creating a breeding program to produce hybrid of Kopyor will be useful for poverty reduction programmes in Indonesia

Embryo Incision as a New Technique for Double Seedling Production of Indonesian Elite Coconut Type âKopyorâ

One of the present major limitations of seedling production of kopyor type coconut using embryo culture is that only one seedling can be produced from a single embryo. Therefore, we report on the development of a new breakthrough technique for the production of double seedlings from a single embryo. The technique consists of four steps, viz. (i) germination; (ii) incision; (iii) splitting; and (iv) recovery. A histological study was carried out on the development of the halved embryo into a new shoot. The best recovery process was obtained when the incised embryo was split into two and recovered into Murashige and Skoog (MS) medium supplemented with 2 μM IBA and 15 μM kinetin. Following this protocol, an average of 56 shoots was successfully recovered from 30 zygotic embryos. The histological study also revealed that the meristem tissue of the halved embryo was able to produce a new meristem and primordial leaf. Most of the shoots then went on to produce normal seedlings and could be acclimatized successfully after having developed 2 or 3 leaves. This protocol is useful for routine seedling production of the kopyor-type coconut

Peel-off emulgel mask of Cocos nucifera L. Extract using gelling agent carbomer 940 as antiacne against Propionibacterium acnes ATCC 11827

Cocos nucifera Linn., which contain lauric acid has been known had antibacterial activity against Propionibacterium acnes that usually improve severe of pimple. Current study investigated optimum formula of emulgel mask based on the C. nucifera L. Extract from Kopyor coconut. Extract were tested for antibacterial against P. acnes ATCC 11827. In this research, C. nucifera L. extract of 1 and 5% were formulated as an active agent of peel off antiacne emulgel mask-containing carbomer 940 in various concentration (1% and 1.5%). The peel-off emulgel mask of C. nucifera L extract was then evaluated in terms of viscosity, pH, drying time, spreadability, and antibacterial activity. The selected formula was formula containing 5% of extract and 1% of carbomer 940. This formula had pH that suitable with skin pH 4.5–6.5, had good spreadability, and also produced highest antibacterial activity against P. acnes

Embryo Incision as a New Technique for Double Seedling Production of Indonesian Elite Coconut Type âKopyorâ

One of the present major limitations of seedling production of kopyor type coconut using embryo culture is that only one seedling can be produced from a single embryo. Therefore, we report on the development of a new breakthrough technique for the production of double seedlings from a single embryo. The technique consists of four steps, viz. (i) germination; (ii) incision; (iii) splitting; and (iv) recovery. A histological study was carried out on the development of the halved embryo into a new shoot. The best recovery process was obtained when the incised embryo was split into two and recovered into Murashige and Skoog (MS) medium supplemented with 2 μM IBA and 15 μM kinetin. Following this protocol, an average of 56 shoots was successfully recovered from 30 zygotic embryos. The histological study also revealed that the meristem tissue of the halved embryo was able to produce a new meristem and primordial leaf. Most of the shoots then went on to produce normal seedlings and could be acclimatized successfully after having developed 2 or 3 leaves. This protocol is useful for routine seedling production of the kopyor-type coconut