03_Evaluation of the Stability and Adaptability of the Bulgarian Lavender (Lavandula Angustifolia Mill.) Sorts Yield

8/13/2019 03_Evaluation of the Stability and Adaptability of the Bulgarian Lavender (Lavandula Angustifolia Mill.) Sorts Yield

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ISSN 1313 - 8820Volume 2, Number 3

September 2010

2010


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ISSN 1313 - 8820 Volume 2, Number 3September 2010


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122

population is only 0.609. The evaluated sorts do not differ less favourable conditions of production.significantly in their plasticity. The total adaptation index values for all The essential oil average yield values for the five years of studysorts are between 2.3 (for the Hemus sort) and 3.0 (for the of Druzhba, Yubileina, Sevtopolis, Raya, and Hebar are very

Sevtopolis sort). The seed population has a lower total adaptation close and higher than the arithmetical mean of this group. Hebarcompared with all the other sorts, which shows a more limited and the seed population are significantly inferior in yield and have aadaptability. lower adaptation index. The other genotypes can be described as

Evaluating the stability and adaptability parameters of the more adaptable to the various conditions of production.essential oil yields for Bulgarian lavender sorts and the seed The comparative analysis of the findings has enabled us topopulation, we have found higher values and wider variation differentiate the studied sorts and the seed population not only withcoefficient ranges in comparison with those calculated for fresh regard to each one of the indicators in the study, but also to describeblossom yields: from 21.2% for Raya to 32.3% for Hemus. A good them with relation to their productivity complex, combining the freshstability of the essential oil yield in favourable environments is raceme yields and the essential oil yields, and their respectivepresent in the case of the Druzhba sort. The most stable genotypes stability and adaptability. According to the results the followingwith regard to this indicator are the Yubileina and Hebar sorts, characteristics can be given:with regression coefficient values of almost 1. The regression The Hemus sort is not characterized with high productivity,coefficient values for Hemus, Raya, and the seed population but on the other hand, it is exceptionally stable for its blossom yield,show that these will give relatively more stable essential oil yields in regardless of the conditions of cultivation.

SortYearSort x yearResidual

64

24102

11343.33**58839.00**29077.66**

48.13

6.723.369.0

Degree offreedom

VarianceSources ofvariation

Variation factorspower, %

Table 1. Dispersion analysis and power of variation factorson fresh lavender raceme yields

LSD*, ** - variances are valid with


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unconverted and converted C3. In:Provides of the Biological Fluids (ed. H.Peters), vol. 22, 143-165, PergamonPress. Oxford, UK.Todorov N and Mitev J, 1995. Effect oflevel of feeding during dry period, and bodycondi t ion score on reproduct ive

thperformance in dairy cows, IXInternational Conference on ProductionDiseases in Farm Animals, Sept.11 14,Berlin, Germany, p. 302 (Abstr.).Thesis:Penkov D, 2008. Estimation of metabolic

energy and true digestibility of amino acidsof some feeds in experiments with muscusduck (Carina moshata, L). Thesis for DSc.Agrarian University, Plovdiv, 314 pp.

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Volume 2, Number 3September 2010

CONTENTS

Genetics and Breeding

Nutrition and Physiology

Production Systems

Agriculture and Environment

Grouping of determinate local tomato varieties on the basis of cluster analysisL. Krasteva, I. Ivanova, N. Velcheva

Genetic diversity in Bulgarian Thoroughbred using microsatellite DNAmarkersG. Barzev, E. Zhelyazkov, V. Barzeva, D. Hristova, Zh. Sabev

valuationofthestabilityandadaptabilityoftheBulgarianlavender(LavandulaangustifoliaMill.) sortsyieldS. Stanev

Effect of dietary exogenous phytase supplementation in growing andfattening pigs. Ilchev

Designing lavender plantations in relation to the mechanized harvesting oflavenderblossomK. Trendafilov, N. Delchev

Economic evaluation of winter wheat leaf fertilizationA. Stoyanova, I. Gospodinov, R. Petkova

Effect of fertilization and predecessor on chemical composition and energyvalue ofwintering oats grainM. Dimitrova Doneva, R. Petkova

Animal hygiene and ecological assessment of air pollution in a pig-farmG. Petkov, G. Kostadinova, R. Stefanova, T. Penev, P. Gercheva

Variation in lipidabundanceandcomposition ina fireaffectedhillside fromLyulinmountain,BulgariaI.Atanassova,M.Teoharov

Determination of minimum heat insulation thickness for an experimentalmethane fermentorR.Georgiev,K.Peychev, I.Simeonov,A.Alexandrov

TheoreticalstudyofabsorptionrefrigerationsystemthermallyactivatedbyavacuumpipesolarcollectorK. Peychev, R. Georgiev, D. Dimitrova

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Documents

03_Evaluation of the Stability and Adaptability of the Bulgarian Lavender (Lavandula Angustifolia Mill.) Sorts Yield