Macleaya cordata species introduction and utilization possibilities in the Republic of Moldova
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ŢIŢEI, Victor. Macleaya cordata species introduction and utilization possibilities in the Republic of Moldova. In: Conservation of plant diversity, Ed. 3, 22-24 mai 2014, Chișinău. Chișinău: Gradina Botanica (Institut), 2014, Ediția 3, pp. 124-125. 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

Macleaya cordata species introduction and utilization possibilities in the Republic of Moldova


Pag. 124-125

Ţiţei Victor
 
Gradina Botanică (Institut) a AŞM
 
Disponibil în IBN: 20 mai 2019



Teza

Introduction Studying, improvement and implementation of introduced species with multiple values are dictated by demand and supply of Moldova’s national economy. Energy security is one of the most pressing challenges of the 21st century. Biomass takes a signifi cant place among renewable energy sources.   Non-food perennial species of agricultural plants are especially interested for biomass production on energy purposes. The introduced non-food herbaceous perennial plant species with intensive growth is Macleaya cordata (Willd.) R. Brown (syn.: Bocconia cordata Willd.), family Papaveraceae Juss., common name plume poppy, natives of eastern Asia (China, Japan). Is cultivated as a garden plant, the aerial parts of M. cordata have long been used as a traditional Chinese medicine for its analgesic and anti-infl ammatory properties in humans (2). The aim of the present study was to evaluate agro biological peculiarities and energy characteristics of biomass the species M. cordata. Material and methods The plants of Macleaya cordata (Willd.) R. Brown which were cultivated in the collection of energy crops of the Botanical Garden (Institute) of the ASM, served as object of study. The experiences with M. cordata started on the experimental fi eld, in late autumn, by planting the rhizomes at a depth of 7-10 cm. Agro biological peculiarities: growth, development and productivity,  were performed according to the methodical indication (3). The biomass was collected and chopped (30 - 35 mm) in early March 2013 from experimental cultures, energy value were carried out according to accepted standards (1), bomb calorimeter LASET-10M. Results and discussions As a result of the study of the biological peculiarities in the fi rst year of vegetation, we can mention that in April, from the rhizomes of the species M. cordata at the soil surface appears the bud which the development stems erect, glaucous, basally lignifi ed, yellow lactiferous; the leaves are light green to olive green, simple lobed, alternate arrangement; the fl ower is radially symmetrical, panicles of creamy white fl owers. The end of vegetation (fl ower stages) the plant height reaches 168 cm. The productivity of biomass constitutes 0.47 - 0.51 kg/m2 dry matter. In the second year and the following years of vegetation, in spring, when the air temperature exceeds 8°C, starts plant development from generative buds formed on the rhizomes, which go through all stages of ontogenetic development fi nishing with seed formation, the plant height reaches 318 -343cm. At the end of the period of vegetation and with the establishment of negative temperatures the stems are completely defoliated, the humidity of the stems about 33-35%  ,  at the in January - below 23%, and in early March 10-13%. The productivity of the harvested biomass constitutes 1.67 - 2.01 kg/m2 dry matter. The bulk density of the chopped stems is 146 - 185 kg/m3. The heat capacity of absolutely dry mass reaches 19.12 MJ / kg. The density of the briquettes made from biomass is 860 kg/ m3. Conclusions Introduced non-food herbaceous perennial plant species Macleaya cordata in the Republic of Moldova in the second year and following years of vegetation are characterized by high productivity and good energy quality biomass (19.12 MJ / kg).