A multilevel exploration of Avena strigosa diversity as a prelude to promote alternative crop

Abstract

Background Sand oat ( Avena strigosa Schreb.), one of the four cultivated species of the genus Avena, could be considered as another alternative crop. In gene banks 865 germplasm samples of this species have been preserved that have not been thoroughly investigated so far. The results of phenotyping (36 traits), isoenzymatic (12 systems) and genetic (8 pairs of Sequence-related amplified polymorphism markers) variation were used to obtain the complete description of 56 accessions diversity originated from different parts of world. Results Breeded and weedy forms represented similar pool of morphological traits that indicated a short-term and extensive breeding process, albeit all accessions which we classified as cultivated were characterized by better grain and green mass parameters compared to the weedy ones. Isoenzymes showed relationships with geographical origin, which was not possible to detect by SRAP markers. There was no similarity between morphological and biochemical results. The polymorphism level of SRAP markers was lower than indicated by the available literature data for other species, however it may result from the analysis of pooled samples of accessions with a high internal variability. The extensive type of breeding and its relatively short duration was also reflected in the population structure results. Joint analysis revealed that a secondary centre of diversity is being created in South America and that it has its genealogy from the Iberian Peninsula. Conclusions Despite the relatively large representation of this species is in various gene banks, it is highly probable that the vast majority of stored worldwide accessions are duplicates, and the protected gene pool is relatively narrow. Sand oat meets all the requirements for an alternative crop species, but further studies are needed to identify the genotypes/populations with the most favourable distribution of utility and quality parameters.

Phenotypic, chemical component and molecular assessment of genetic diversity and population structure of Morinda officinalis germplasm

“…Analysis of population structure and genetic diversity based on accessions’ phenotypic traits is more convenient, but genotypic analysis is relatively accurate, and the two methods complement each other. Therefore, several authors point out that the best way is to combine the two methods to identify genetic differences [ 45 , 68 ], which can further our understanding of the genetic background of the population due to the abundant and non-overlapping information.…”

Investigation of obsolete diversity of rye (Secale cereale L.) using multiplexed SSR fingerprinting and evaluation of agronomic traits

“…As a consequence, it is very difficult to detect the linkage between the genetic and geographical distance in crops (Boczkowska and Tarczyk 2013 ; Diederichsen 2008 ). However, in the case of minor crops not so intensively bred, the relationship with the region of origin is much more evident (Podyma et al 2017 ; Podyma et al 2019 ). Earlier analyses of rye also indicated a lack of a link between the genotype and place of origin.…”

Genetic parameters and genetic dissimilarity of Gower in black oat

“…Among them, there is the GOWER (1971) method, that allows to analyze the genetic divergence matching quantitative and qualitative traits. This statistical method has been successfully used in several crops, such as soybean (FOLLMANN et al, 2019;SILVA et al, 2022), coffee (FERRÃO et al, 2021), elephant grass (VIDAL et al, 2021), wheat (VIKRAM et al, 2019MEIER et al, 2021) and oat (FOGARTY et al, 2019;PODYMA et al, 2019).…”