scholarly journals Characterisation and evaluation of morphological trials, biological features and seed yield of 23 flax accessions (Linum usitatissimum L.) of different geographical origins

2018 ◽  
Vol 64 (4) ◽  
pp. 1-13 ◽  
Author(s):  
Grażyna Silska ◽  
Jan Bocianowski
Keyword(s):  
Genetic Resources ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Biological Diversity ◽  
Cannabis Sativa ◽  
Field Trials ◽  
Convention On Biological Diversity ◽  
Biological Features ◽  
Linum Usitatissimum L ◽  
Lateral Branches

Summary Introduction: The Institute of Natural Fibres and Medicinal Plants (INF&MP) is involved in the protection of the genetic resources of flax (Linum usitatissimum L.) and hemp (Cannabis sativa L.). In 1998–2000, the INF&MP conducted research titled “Collection and evaluation of flax and hemp cultivars and ecotypes”. Poland participates in the programme, financed by the Ministry of Agriculture and Rural Development because our country has signed the Convention on Biological Diversity. Objective: The objective of the research was the evaluation of the genetic resources of 23 accessions of flax. The characteristics data for flax accessions are presented according to traditional methodology and according to the methodology for developing the International Flax Data Base. Methods: Field trials were carried out in 1998–2000 in the experimental station in Wojciechów, located in the Opolskie region. The objective was to evaluate the morphological traits, biological features and seed yield of 23 accessions of flax. The research included the following genotypes of Linum usitatissimum L. according to type of use: 12 linseed varieties, three landraces, one accession of unknown type of use, six fibre varieties and one genotype of both types of use. Results: The total plant length of Linum was short for 12 accessions of flax, medium short (7) and medium (4). The technical length was short (17 accessions), medium short (3) and medium (3). The stem thickness for all accessions was medium, i.e. between 1.2 and 2.0 mm. The panicle length was short (12 accessions), medium (10) and long (1). A number of primary lateral branches of the stems of all flax accessions was medium (4–8 branches). The 1000 seed weight was low for 21 accessions of flax and very low in two genotypes: Currong and UKR 97 104. The size of the corolla (flower) was small (9), medium (12) and large (2) – varieties: Martin and Maxigold. The petal colour of the corolla was blue (11), light blue (8) and white (4) – Crystal, Hella, Kreola, Achay. Conclusions: Morphological characterisation of the stamen showed that accession K-1390 was segregating because the anther colour was bluish and greish. The highest resistance to lodging was observed for Abby, Peak and Olinette. The following accessions of flax were very resistant to Fusarium: Martin, UKR 97269, Kijewskij and Ukraińskij 3; resistant to Fusarium: Abby, Peak, Olinette, Crystal, Gold Merchant, Currong and Ukraińskij 2. The following varieties were very susceptible to Fusarium: Hella, Kreola, Maxigold and Achay. These varieties should not be used for cross breeding. The best average seed yield in 1998–2000 in Wojciechów was found in the following accessions of flax: Abby (191%), Gold Merchant (162%), Currong (161%), Olinette (151%), PEAK (148%), UKR 97269 (148%), Crystal (138%), Ukraiński 3 (132%), Martin (130%), Pacific (110%) and Ukraiński 2 (103%). These varieties are particularly valuable for flax breeders.

scholarly journals Vegetation period of genetic resources of flax (Linum usitatissimum L.)

2020 ◽  
Vol 66 (3) ◽  
pp. 36-47
Author(s):  
Grażyna Silska
Keyword(s):  
Medicinal Plants ◽  
Genetic Resources ◽  
Linum Usitatissimum ◽  
Biological Diversity ◽  
Cannabis Sativa ◽  
Genetic Material ◽  
Vegetation Period ◽  
Convention On Biological Diversity ◽  
Biological Features ◽  
Beginning Of Flowering

Abstract Introduction Institute of Natural Fibres and Medicinal Plants (INF&MP) is involved in gathering and evaluation of genetic resources of flax (Linum usitatissimum L.), hemp (Cannabis sativa L.) and medicinal plants, because Poland has signed the Convention on Biological Diversity. Field trials were carried out in 1990–2001 in the Experimental Station in Wojciechów located in Opolskie region. The research material was accessions of genetic resources from the collection of flax, stored at the Institute of Plant Breeding and Acclimatization Institute in Radzików near Warsaw. Objective The aim of the publication was to evaluate the following biological features of flax: time of beginning of flowering and vegetation period to yellow maturity. Methods The characteristics data for flax accessions are presented according to the methodology of development of the International Flax Database. Each flax accessions from the world collection of flax genetic resources received one of the following assessments of two vegetation periods: very short, short, medium, long and very long. Descriptors of biological features of flax were used, presented in “List of flax descriptors (L. usitatissimum L.)” edited by Janka Nozkova, published in 2011. These descriptors are used to develop the International Flax Database, which in turn helps in the rapid evaluation of the L. usitatissimum genetic resource collection. Carrying out a detailed characterization of biological features of L. usitatissimum accessions is very helpful for breeders in selecting genetic material for breeding new varieties of flax. Results The following results were obtained from the time of the beginning of flowering and the vegetation period to yellow maturity. Time of beginning of flowering was the following: very short – 0 accessions, short – 97 accessions, medium – 20 accessions, long – 2 accessions and very long – 0 accessions of flax. The genotypes tested were characterized by the following results in terms of vegetation period from sowing to yellow maturity: very short – 0, short – 37, medium – 62, long – 0 and very long – 0 accessions of flax. Conclusions Time of beginning of flowering and the vegetation period to yellow maturity shall be revalorised to the International Flax Database for those L. usitatissimum accessions that did not receive the same assessment of the biological features tested in the two or three years of the study.

scholarly journals DISEASES DIVERSITY FOR FLAX GENETIC RESOURCES IN LATVIA

2017 ◽  
Vol 1 ◽  
pp. 278
Author(s):  
Inga Stafecka ◽  
Dace Grauda ◽  
Veneranda Stramkale
Keyword(s):  
Flow Cytometry ◽  
Life Cycle ◽  
Genetic Resources ◽  
Environmental Conditions ◽  
Linum Usitatissimum ◽  
Field Trials ◽  
Research Centre ◽  
Standard Variety ◽  
Linum Usitatissimum L ◽  
Stage Of Development

Flax (Linum usitatissimum L) yield of stem and seeds and them quality is influenced by a number of harmful diseases but investigation about pathogens in recent years have not been done in Latvia. Each stage of development of disease is important in the pathogen life cycle and requires certain condition. Goal of this study have identify possibilities of the pathogens and were assess disease severity depending on the genotypes on flax in variable environmental conditions. The resistance to the diseases for 24 flax genotypes and standard variety ‘Vega 2’ were evaluated. The field trials have been carried out over the period from 2015 to 2016 at the Research Centre of Priekuli, part of Vilani in Latgale. Disease progress was measured every week, and for each treatment, severity of diseases index and the area under the disease progressive curve (AUDPC) were calculated. The flow cytometry method for detection of flax pathogens was developed. The Fusarium avenaveum was dominating disease and statically significant in both vegetation periods. In 2015 were identified statically significant (p

Combining ability and heterosis studies across environments in linseed (Linum usitatissimum L.)

2011 ◽  
Vol 59 (1) ◽  
pp. 87-102 ◽  
Author(s):  
S. Sood ◽  
N. Kalia ◽  
S. Bhateria
Keyword(s):  
Seed Yield ◽  
Linum Usitatissimum ◽  
Combining Ability ◽  
Yield Components ◽  
Block Design ◽  
Linum Usitatissimum L ◽  
Randomized Block Design ◽  
Component Traits ◽  
Parental Lines ◽  
Fibre Yield

Combining ability and heterosis were calculated for fourteen lines of linseed in a line × tester mating design using twelve lines and two diverse testers in two different environments. The hybrids and parental lines were raised in a completely randomized block design with three replications to investigate seed and fibre yield and their component traits. Genetic variation was significant for most of the traits over environments. Combining ability studies revealed that the lines KL-221 and LCK-9826 were good general combiners for seed yield and most of its components, whereas LMH-62 and LC-2323 were good general combiners for yield components only. Moreover, KL-221 was also a good general combiner for fibre yield. Similarly, B-509 and Ariane were good general combiners for fibre yield and most of its components. Among the specific cross combinations, B-509 × Flak-1 was outstanding for seed yield per plant and B-509 × KL-187 and LC-2323 × LCK-9826 for fibre yield per plant, with high SCA effects. In general, the hybrids excelled their respective parents and the standard checks for most of the characters studied. Based on the comparison of mean performance, SCA effects and the extent of heterosis, the hybrids LC-2323 × LCK-9826 and B-509 × KL-221 appeared to be the most promising for both seed and fibre yield. Other promising combinations were LC-2323 × KL-210 and B-509 × Ariane for seed and fibre yield, respectively. The superiority of LC-2323, LCK-9826, KL-221, B-509 and Ariane as good general combiners was further confirmed by the involvement of these parents in the desirable cross combinations.

Convention on Biological Diversity: Towards a sustainable future

Social Change ◽  
2003 ◽  
Vol 33 (2-3) ◽  
pp. 173-191
Keyword(s):  
Genetic Resources ◽  
Biological Diversity ◽  
Technology Development ◽  
Sustainable Use ◽  
United Nations Environment Programme ◽  
Benefit Sharing ◽  
Convention On Biological Diversity ◽  
Biological Resources ◽  
Transfer Benefit ◽  
Global Agreement

In an era of a rapidly shrinking biological resources, the Convention on Biological Diversity (CBD) is a historic landmark, being the first global agreement on the conservation and sustainable use of biological diversity. The CBD is one of the few international agreements in the area of natural resource conservation in which sustainability and equitable benefit-sharing are central concerns. The CBD links traditional conservation efforts to the economic goal of using biological resources sustainably and sets forth principles for the fair and equitable sharing of the benefits arising from the use of genetic resources, notably those destined for commercial use. Importantly, the CBD also gives traditional knowledge its due place in the sustainable use of genetic resources. The CBD also covers the rapidly expanding field of biotechnology, addressing technology development and transfer, benefit-sharing and biosafety, in an equitable framework. In the coming years, the CBD is likely to have major repercussions on the way biodiversity is conserved and benefits thereof, shared between the developing and developed worlds. The following commentary on the CBD has drawn heavily from a document produced by Secretariat of the Convention on Biological Diversity, at the United Nations Environment Programme. Articles 1 to 21 of the CBD have also been reproduced here in order to disseminate knowledge regarding the principles of the CBD-Editor.

scholarly journals ACCESS AND BENEFIT SHARING UNDER NAGOYA PROTOCOL AND SUSTAINABLE DEVELOPMENT: A CRITICAL ANALYSIS

2015 ◽  
Vol 9 (3) ◽  
pp. 38-45
Author(s):  
STELLINA JOLLY
Keyword(s):  
Sustainable Development ◽  
Genetic Resources ◽  
Biological Diversity ◽  
Environmental Law ◽  
Developing Nations ◽  
Benefit Sharing ◽  
Convention On Biological Diversity ◽  
Access And Benefit Sharing ◽  
Nagoya Protocol ◽  
Equitable Sharing

The debate over control and ownership of natural and bio genetic resources has a chequered history in International environmental law. Historically genetic resources were considered and acknowledged as part of common heritage of mankind. But with the development of technologies and the heightened north south divide over the issue of sovereign right over natural resources the developing nations became extremely concerned with the exploitation of biological and Genetic resources. Access to benefit sharing (ABS) was considered as an answer to balance the interests of developed and developing nations and to conserve and protect bio diversity. Adopted on October 2010 in Nagoya, Japan by the Parties to the Convention on Biological Diversity (CBD) of 1992, the Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from their Utilization (NP) has come into force after its 50th ratification on 2013. Nagoya protocol details on procedure for access and benefit sharing, disclosure mechanism, principles of transparency and democracy. The paper analyses the protection of access and benefit sharing envisaged under Nagoya protocol and its possible role in promoting sustainable development in the develoing nations. 

Flax (Linum usitatissimum L.) responses to chilling and heat stress on flowering and seed yield

1997 ◽  
Vol 77 (1) ◽  
pp. 97-99 ◽  
Author(s):  
L. V. Gusta ◽  
B. J. O'Connor ◽  
R. S. Bhatty
Keyword(s):  
Heat Stress ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Oil Quality ◽  
Oil Composition ◽  
Flowering Stage ◽  
Linum Usitatissimum L ◽  
Flower Yield ◽  
Delayed Flowering ◽  
Chilling Treatment

The effect of a 5 °C chilling treatment at the seedling stage on days to flower, yield and oil quality and quantity was determined for seven cultivars of flax (Linum usitatissimum L.). Three days of chilling delayed flowering in Dufferin, McGregor and NorLin, whereas 5 d of chilling delayed flowering in all cultivars except Andro and Noralta. Seven days of chilling reduced the seed yield of only McGregor, Norlin, NorMan and Vimy. The effect of a 40 °C heat stress at the flowering stage on yield and oil composition was determined for the same seven cultivars. A heat stress of 40 °C for 3 d reduced the seed yield of NorMan, whereas, a 5 d stress reduced the seed yield of all cultivars except McGregor and Noralta. The composition of the oil was not affected by the heat stress. These results suggest genetic variability exists among flax cultivars for tolerance to chilling and heat stresses. Controlled tests can be used to select superior stress tolerant genotypes. Key words: Flax, chilling, heat, flowering, yield

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