ISSN 1313 - 8820Volume 6, Number 2

June 2014

2014

Scope and policy of the journalAgricultural Science and Technology /AST/ – an International Scientific Journal of Agricultural and Technology Sciences is published in English in one volume of 4 issues per year, as a printed journal and in electronic form. The policy of the journal is to publish original papers, reviews and short communications covering the aspects of agriculture related with life sciences and modern technologies. It will offer opportunities to address the global needs relating to food and environment, health, exploit the technology to provide innovative products and sustainable development. Papers will be considered in aspects of both fundamental and applied science in the areas of Genetics and Breeding, Nutrition and Physiology, Production Systems, Agriculture and Environment and Product Quality and Safety. Other categories closely related to the above topics could be considered by the editors. The detailed information of the journal is available at the website. Proceedings of scientific meetings and conference reports will be considered for special issues.

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Editor-in-Chief

Tsanko YablanskiFaculty of AgricultureTrakia University, Stara ZagoraBulgaria

Co-Editor-in-Chief

Radoslav SlavovFaculty of AgricultureTrakia University, Stara ZagoraBulgaria

Editors and Sections

Genetics and Breeding

Atanas Atanasov (Bulgaria)Nikolay Tsenov (Bulgaria)Max Rothschild (USA)Ihsan Soysal (Turkey)Horia Grosu (Romania)Bojin Bojinov (Bulgaria)Stoicho Metodiev (Bulgaria)

Nutrition and Physiology

Nikolai Todorov (Bulgaria)Peter Surai (UK)Zervas Georgios (Greece)Ivan Varlyakov (Bulgaria)

Production Systems

Dimitar Pavlov (Bulgaria)Bogdan Szostak (Poland)Dimitar Panaiotov (Bulgaria)Banko Banev (Bulgaria)Georgy Zhelyazkov (Bulgaria)

Agriculture and Environment

Georgi Petkov (Bulgaria)Ramesh Kanwar (USA)Martin Banov (Bulgaria)

Product Quality and Safety

Marin Kabakchiev (Bulgaria)Stefan Denev (Bulgaria)Vasil Atanasov (Bulgaria)

English Editor

Yanka Ivanova (Bulgaria)

2014

ISSN 1313 - 8820 Volume 6, Number 2June 2014

Correlations between morphological and productive parameters in Burley tobacco

1 2Y. Dyulgerski , T. Radoukova *

1Tobacco and Tobacco Products Institute, 4108 Markovo, Bulgaria2Department of Botany and Agrometeorology, Faculty of Agronomy, Agricultural University, 12 Mendeleev, 4000 Plovdiv, Bulgaria

Abstract. The dependencies are investigated between important morphological and productive signs of Burley tobacco. Five important Burley tobacco varieties – Burley 1000, Burley 1317, Burley 21, Burley 420 and Pliskaare tested. Strong positive correlation between plant height and number of leaves is established. The number of leaves is positively correlated with yield but negatively with the size of the leaves. The size of the leaves is positively correlated with yield and percentage of classes. The length of the vegetative period is positively correlated with all studied morphological parameters and yield, but negatively with the percentage of first class. The increase in yield is related to the percentage of first class. The results obtained can be used successfully to optimize the selection process in Burley tobacco.

Keywords: Burley tobacco, morphological parametrs, productive characteristics, correlations

AGRICULTURAL SCIENCE AND TECHNOLOGY, VOL. 6, No 2, pp , 2014197 - 198

Introduction Results and discussion

The development of the science of selection in crops is based The highest degree of positive correlation has been reported on the creation of new varieties with higher productivity. between plant height and number of leaves (0.767). Slight positive Theknowledge of the dependencies that exist between signs correlation was determined between plant height and leaf size, but it defining the yield would result in greater efficiency of the selection is not of significant value (Table 1). The height of the stem is one of process (Ganusheva and Dimova, 1990). Researches in this the most important indicators of forming the extraction of tobacco direction have been conducted in various crops (Deweyand Lu, plants. The reported value of these two indicators (plant height and 1957;Allard and Nenshe, 1964; Singh and Khanna, 1993; Stanev, yield) for the studied varieties of Burley tobacco is 0.505. Average 2010).The most important biological signs of tobacco are: height, negative correlation was reported between the number of leaves number of leaves, leaf size and length of the vegetation period. All and their size, the trend is more pronounced in the leaves than the directly or indirectly determine the yield and quality of tobacco of middle harvesting belt. There is a strong positive correlation each type and are essential for the agronomic practice (Tomov, between the number of leaves and the size of the yield (0.637). In the 1972, 1985, 1989; Chinchev, 1984, 1988; Dimanov, 2003; Masheva, present study the indicator number of leaves has almost no influence 2007). on tobacco quality (Table 1).The resulting data show a significant

The aim of this study was to reveal the relationships between positive correlation between both the length and width of the leaves the most important morphological and productive characteristics of both harvesting belts and between the leaf size of the separate ofBurley tobacco in order to predict the appearance of any sign harvesting belts. Size of the leaves in the lower one largely which utilizes established relationships with others in order to determines thesize of leaves in the upper harvesting belt.optimize the selection process. Size of the leaves is the main feature that determines the yield

by Tomov (1986) and Mutafchieva (2009). The obtained results define the correlation between the two features as the average positive. The index length of the leaves indicates the higher Material and methods correlation values for both harvesting belts, 0.501 and 0.545, respectively. The lowest correlation is at width 7–8 leaf – 0.490. Size

The experiment is displayed in a block method in 2009–2012. of the leaves has a slightly to moderately positive impact on the

The research is on the most wide spread varieties of Burley tobacco percentage of first class. The length of a leaf in the middle harvesting

– Burley 1317, Burley 1000, Burley 420, Burley 21 and Pliska. belt has the highest expression on increasing the percentage of the

Cultivation and drying tobacco is adopted according to the first class (0.438), and the least – the width of the leaves in the lower

technology of this variety group.harvesting belt – 0.229 (Table 1).

Dependencies between the following parameters: plant height, The length of vegetative period is positively correlated with all

number of leavesper plant, length and width of 7- and 14-leaf morphological characteristics of the tobacco plant. There is a poor

representatives, respectively lower and middle harvesting belt, correlation with the length and width of 13–14 leaf, respectively

length of vegetative period, yield and percentage of first-classcured 0.188 and 0.012, moderate with plant height (0.330) and number of

tobacco are defined. Correlation analysis of the data was performed leaves (0.350), length and width of the sheet 7–8 – 0.270 and 0.307,

using the statistical package SPSS. To measure the strength of the respectively. The positive effect ofthe longer vegetative period on all

relationship between the studied indicators the linear correlation examined morphological indicators logically leads to an increase in

coefficient (r) was used.* e-mail: kiprei@abv.bg

197

yield, which is in positive correlation with the average length of the Agronomy Journal, 51, 515-518.vegetative period (0.506). The increased length of the vegetative Dimanov D, 2003. Herediatability, correlative and regression period, however, has a negative impact on tobacco quality (the coefficients of some quantitative characters in somaclonal Oriental percentage of first-class), and the readingis above the average – tobacco progenies. Genetics and Breeding, 32,11-15.0.671 (Table 1). This is unfavorable for selection of perspective. Ganusheva N and Dimova D, 1990. Correlation and Path-

Although unproven as value, the established relationship coefficient analysis of quantitative characters in barley. Scientific between yield and percentage of first class is negative. Other Works, Karnobat, 58-63 (Bg).authors (Shabanov, 1974; Nikolov et al., 2004) also mention such Masheva C, 2007. Investigation inheritance of main indications results in the study of tobacco varieties. This leads to difficulty in oforiental tobacco (N. tabacum) and possibility for using of proline as selection work. stress marker in Breading.Thesis for PhD, Agrarian University,

Plovdiv (Bg).Mutafchieva M, 2009. Research and selection of varieties tobacco Burley. Thesis for PhD, Tobacco and Tobacco Products Institute,

Conclusion Markovo (Bg).Nikolov E, Masheva V and Hristeva Z, 2004. Influence of growth

There is a strong positive correlation between the height of environmental on economical and technological properties for ITTI plants and the number of leaves.The number of leaves was 386, variety. In: Scientific Conference, Kardjaly 2004, ISBN 954 - positively correlated with yield but negative with the size of 9634 -25 – 6, Х.(Bg).leaves.Тhe size of leaves is positively correlated with yield and Shabanov D,1974. Tobacco in Bulgaria, Plovdiv, Bulgaria (Bg).percentage of classes.The vegetative period is positively correlated Singh SP and Khanna KR, 1993. Path coefficient analysis of opium with all studied morphological indicators and yield but negative in the and seed yield in opium poppy (Papaver somniferum L.). Genetika, percentage of first class.The increase in yield of Burley tobacco 25,2,119-128.leads to a reduction in the quality of cultivated tobacco.

Stanev S, 2010. Correlations between morphological characte- ristics and yield in lavender (Lavandula angustifolia Mill.). In: 20 Anniversary ISC, St. Zagora, 214-216(Bg).

References Tomov N, 1972. Influence of variety - the biological peculiarities and soil - climatic conditions on the magnitude of the changes in some

Allard RW and Hensche PE, 1964. Some parameters of population morphological properties tehnological, chemical and economic variability and their implication in plant breeding. Advanced qualities of Oriental tobacco. Thesis for PhD. Tobacco and Tobacco Agronomy,16, 281-325. Products Institute, Markovo (Bg).Chinchev B, 1984, An important trend of breeding work. Bulgarian Tomov N, 1985. Structure on yield at local assortment oriental Tobacco,10, 8-11 (Bg). tobacco. Bulgarian tobacco, 5, 10-14(Bg).Chinchev B, 1988. In Large-leaved tobacco - effective varietal Tomov N, 1986. Basic indicators for modeling variety. Bulgarian structure. Bulgarian Tobacco, 1, 8-12.(Bg). Tobacco, 4, 10-14(Bg).Dewey DR and Lu KH, 1957. Acorrelation and path – coefficient Tomov N, 1989. Influence of growing conditions and genotype on analysis of components of crested wheat grass seed production. the contents of total condensate. Bulgarian Tobacco, 6, 19-23 (Bg).

Table1. Correlation coefficients (r) between biometric and economical signs in Burley tobacco

*p 0.05, ** p≤0.01,*** p 0.001≤ ≤

Signs

Height of plants

Number of leaves

Length of 7–8 leaf

Width of 7–8 leaf

Length of 13–14 leaf

Width of 13–14leaf

Vegetative period

Yield

% І class

1.000

0.767***

0.108

0.125

0.049

0.073

0.330*

0.505**

0.095

0.767***

1.000

-0.327*

-0.298*

-0.517**

-0.375*

0.350*

0.637**

0.083

0.108

-0.327*

1.000

0.359*

0.649**

-0.042

0.270

0.501**

0.308*

0.125

-0.298*

0.359*

1.000

0.138

0.618**

0.307*

0.490**

0.229

0.049

-0.517**

0.649**

0.138

1.000

-0.201

0.188

0.545**

0.438**

0.073

-0.375*

-0.042

0.618**

-0.201

1.000

0.012

0.499**

0.345*

0.330*

0.350*

0.270

0.307*

0.188

0.012

1.000

0.506**

-0.671**

0.505**

0.637**

0.501**

0.490**

0.545**

0.499**

0.506*

0.000

-0.359*

0.095

-0.083

0.308*

0.229

0.438**

0.345*

-0.671**

-0.359*

1.000

Height ofplants

Number ofleaves

Length of7-8 leaf

Width of 7-8 leaf

Length of13-14 leaf

Width of13-14leaf

Vegetativeperiod Yield % І class

198

Reviews

Genetics and Breeding

Nutrition and Physiology

Production Systems

Selection for linear traits for legs and feet and its significance for dairy cattle breedingI. Marinov

Morphological analysis of spikes and grouping of accessions of Triticum turgidum ssp. dicocconH. Stoyanov

Crops from Cucurbitaceae in collection of the Maritsa Vegetable Crops Research Institute, Plovdiv – local cultivars and their application in breeding programmeN. Velkov, V. Petkova

Study of chickpea seed size heredity (Cicer arietinum L.)R. Sturzu, T. Nistor, F. Bodescu, C. Melucă

Egg quality traits in layers from different production types H. Lukanov

Evaluation of Bulgarian winter common wheat varieties of yield stability in South BulgariaZ. Uhr, G. Rachovska, G. Delchev

Study of opportunities for effective use of varieties from Ukraine for creating early winter wheat lines II.Grain qualityN. Tsenov, D. Atanasova, I. Stoeva, E. Tsenova

Anther culture response of Winter Barley (Hordeum vulgare L.)B. Dyulgerova, D. Vulcheva, D. Dimova

Evaluation of grain yield in advanced lines two-rowed winter barleyM. Dimitrova-Doneva, D. Valcheva, D. Vulchev, B. Dyulgerova, M. Gotcheva, T. Popova

Haematology and some serum parameters of broilers fed decorticated fermented Prosopis africana seed mealD. Hassan, N. Yusuf, M. Musa, I. Musa-Azara, R. Barde, D. Ogah, A. Yakubu, M. Ari

Comparative age – related weight and morphometrical investigation of the intraorbital glands in the common bronze turkey (Meleagris Meleagris Gallopavo)D. Dimitrov

Effect of the dietary supplement Zarnela on some duodenal chyme parameters in yearling rams V. Radev, I. Varlyakov, T. Slavov, R. Mihaylov

13. Variations of maize yield and some quality indices of grain depending on the type of main soil tillageP. Yankov, M. Drumeva, D. Plamenov

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Behavior, sexual maturity and productive traits in gilts reared under different floor areaM. Kirov, V. Doychev.

Influence of organic fertilizers Aminobest and Greenfol on the initial stages of growth of wheat (Triticum aestivum L.)М. Pashev, D. Yakimov, V. Budаeva

Algorithm for determining the type of turns carried out by the unit in shuttle movement in the field while using precision farming systemsK. Trendafilov

Correlations between morphological and productive parameters in Burley tobaccoY. Dyulgerski, Tz. Radoukova

Growth and fruiting of the apple sort Braeburn 7926 grafted on M9 Pajam2 and MM106G. Dobrevska

Theoretical model of biogas production from cattle slurry with different additive of maize silageK. Peychev, R. Georgiev

New data about Agaricus (Section Minores, Agaricaceae) in BulgariaM. Lacheva, Tz. Radoukova

Changes of the humus status of Pellic Vertisol (FAO) soil type under long-term growing of filed crops in a stationary trial without fertilizationV. Koteva, S. Kostadinova

Non-fish marine resources and their exploitation along the Bulgarian Black Sea coastE. Petrova – Pavlova

Productivity and grass density of the main types of pastures in Sakar and Strandja regionV. Vateva

Automatic measurement of Loin eye urea with computer vision system Z. Zlatev, S. Ribarski, M. Mladenov

Influence of the kinetics of salting for Bulgarian white brined cheese, produced by mechanized and traditional technology on the starter and adjunct microflora during ripeningP. Panayotov, V. Mihailov, D. Rakov

Effect of season, lactation period and number of lactation on mastitis incidence and milk yields in dairy cowsT. Penev, Zh. Gergovska, I. Marinov, V. Kirov, K. Stankov, Y. Mitev, Ch. Miteva

Agriculture and Environment

Product Quality and Safety

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thmance in dairy cows,IX International Conference on Production Diseases in Farm Animals, September 11–14, Berlin, Germany.Thesis:Hristova D, 2013. Investigation on genetic diversity in local sheep breeds using DNA markers. Thesis for PhD, Trakia University, Stara Zagora, Bulgaria, (Bg).

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