Peculiarities of propagating the Prinsepia sinensis (oliv.) Kom species
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PALANCEAN, Alexei, ONICA, Elisaveta, ROŞCA, Ion. Peculiarities of propagating the Prinsepia sinensis (oliv.) Kom species. In: Conservation of plant diversity, Ed. 3, 22-24 mai 2014, Chișinău. Chișinău: Gradina Botanica (Institut), 2014, Ediția 3, pp. 102-103. ISBN 978-9975-62-370-4.
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Conservation of plant diversity
Ediția 3, 2014
Simpozionul "Conservation of plant diversity"
3, Chișinău, Moldova, 22-24 mai 2014

Peculiarities of propagating the Prinsepia sinensis (oliv.) Kom species


Pag. 102-103

Palancean Alexei, Onica Elisaveta, Roşca Ion
 
Gradina Botanică (Institut) a AŞM
 
 
Disponibil în IBN: 20 mai 2019



Teza

Introduction In relation to climate changing, hazardous degradation processes of vegetation, and worsening the conditions for existence of plant species have been identifi ed – for this reason, it is need, to mobilizing and preserving the biodiversity within continuity. Landscape gardening in urban localities and rural areas has a landscape, sanogenous, and economic competence. For landscape gardening of decorative and qualitative planting material is needed, more superior to the existing one, with early fl owering period and long duration. For this reason the P. sinensis species study of propagating peculiarities we has been proposed, having the target of it cultivation and implementation in landscape gardening. Material and methods As biological experimental material P. sinensis species were served. Is a deciduous dense shrub with arching spiny branches. Spring brings yellow fl owers. Possess red cherry-like fruit. Plants prefer well-drained soil and ful sun, extremely hardy and drought tolerant. Used as hedge. Results and discussions Yellow Prinsepia early at the same time as foliage fl ourishes when during 10 days the air temperature is more than 5o C. Fruits is maturing in September-October. Freshly peeled seeds were selected in three groups as follows: a part of seeds for preserving and stratifying, the second one – 48 hours in distilled water, the third – exposed in 0,01mg/l de KMnO4 solution. The treated seeds into the soil well loosened in open ground in late October were incorporated. It was established that treated seeds have higher germination (75%) than untreated (50%). The stratifi ed seeds over 150-180 days at the temperature 0-5° C and sown in spring had lower germination (30-45%). The seed germination percentage depends on the period of incorporation in soil and of the climate conditions in which the mother plants were developed. The seeds harvested in the drought 2012 had a germination of 20%. Prinsepia is propagated by ligniferous cuttings, sampled in late fall or in early spring and conserved in refrigerators or cold seedbeds in plastic bags. The cuttings are taken from the middle of annual shoots, then in seedbeds cold are planted. The optimal variant for obtaining planting material with minimal costs is that of woody cuttings treatment with solutions of 0.01% heteroauxin for 16 hours and planted in cold seedbeds in late spring, avoiding the danger of spring low temperatures has been established. The rhizogenesis percentage of woody cuttings depends on climatic conditions and of technology throughout the period of vegetation. Conclusion P. sinensis is propagated by generative and vegetative way and can be successfully implemented in landscaping. P. sinensis species seeds germination percentage depends on many objective and subjective factors it was established. A decisive role belongs to the climatic conditions during fl owering and growth periods, also of fruits maturation, seed quality, seed conservation conditions, substrate or the germinating bed where the seeds were incorporated, accept the technology during the whole period of vegetation – from the incorporation the seeds in necessary substratum, until transplanting seedlings in the open fi eld.