Productivity and stability of the yield from common winter wheat cultivars developed at IPGR Sadovo under the conditions of Dobrudzha region
Abstract. One of the main directions of the common winter wheat breeding programs in Bulgaria is related to enhancing productivity. Since wheat is a crop of the microclimate, yield is strongly influenced by the conditions of the environment. The contemporary tendencies in the breeding of this crop...
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| Format: | Article |
| Language: | English |
| Published: |
Trakia University. Faculty of Agriculture, Stara Zagora
2015-03-01
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| Series: | Agricultural Science and Technology |
| Subjects: | |
| Online Access: | http://agriscitech.eu/wp-content/uploads/2015/03/003.pdf |
| Summary: | Abstract. One of the main directions of the common winter wheat breeding programs in Bulgaria is related to enhancing productivity. Since wheat is a crop of
the microclimate, yield is strongly influenced by the conditions of the environment. The contemporary tendencies in the breeding of this crop are directed not
only towards achieving high results with regard to productivity but also towards maintaining a relative stability of yield under changeable climatic factors. The
aim of this investigation was to study the productivity and determine the stability of the yield from common winter wheat cultivars developed at the Institute for
Plant and Genetic Resources (IPGR) Sadovo under the conditions of Dobrudzha region, Bulgaria. The field experiment was carried out in the trial field of
Dobrudzha Agricultural Institute (DAI) during 2011 – 2013. Nineteen cultivars, breeding of IPGR, were tested in three replications. Cultivar Enola was used as a
standard. The productive potential, the elements of yield and its stability were investigated. Two-factor dispersion, variation and correlation analyses were
applied for statistical evaluation of the results, and the method of Kang, PCA analysis and AMMI models were involved to describe stability. With regard to
vegetation period, the investigated materials did not differ from the standard cultivar Enola. They possessed typical good combination of high tillering capacity
and grain weight per spike. The productivity of the studied accessions was formed mainly by these two indices. The cultivars, which realized highest yields
averaged for the tree years of the investigation, were Mustang, Diamant, Tsarevets and Geya 1, and cultivars Bononya, Momchil and Lusil demonstrated
stability by this trait. The optimal ratio between high productive potential and yield stability was observed in cultivars Mustang, Tsarevets, Momchil and Boryana |
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| ISSN: | 1313-8820 1314-412X |