Genetic Variability for Micronutrient Content and Tuber Yield Traits among Biofortified Potato (Solanum tuberosum L.) Clones in Ethiopia

Abstract

Malnutrition is one of the global issues of public health concern, and iron and zinc deficiencies are at the top of the list. Iron deficiency affects more than 2 billion people in the world and is a major cause of anemia. Potato has the potential to be an important source of iron and zinc. This study assessed the nature and magnitude of genetic variability in Fe and Zn concentrations, tuber yield, and quality traits among biofortified tetraploid potato clones and their relationships through correlation and path analysis. A total of 45 potato genotypes, including the variety Gudanie, were grown in field trials in a 9 × 5 alpha lattice design with three replications. Significant differences in mineral, tuber quality, and yield traits were observed among the genotypes, and high broad-sense heritability was obtained for most traits, suggesting that progress through breeding can be achieved. However, negative correlations and direct effects on most of the traits with Fe and Zn contents are found both at genotypic and phenotypic levels. Therefore, attaining simultaneous genetic gain for yield and enhanced Fe and Zn concentrations will be challenging. Cluster analysis assembled them into five groups. Cluster II contained the most prominent genotypes, having better mean values compared to all other genotypes for micronutrient traits, viz., Fe (23.80 mg kg−1) and Zn (17.07 mg kg−1). The results of this study confirm the presence of sufficient genetic variation for iron and zinc mineral concentration and the possibility to make significant progress through breeding.

A new challenge in accounting education: convergence of maturity model, education and evaluation in accounting

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Correlation and Path Analysis for Agronomic and Processing Quality Traits of Potato (<i>Solanum tuberosum</i> L.) at Holetta, Central Ethiopia

“…This will give breeders a good chance to select genotypes with different maturity group, tuber yield performance and qualities relevant to processing purposes. Several researchers [18][19][20][21][22][23][24] reported highly significant genotype differences for phenology, tuber yield, processing purpose and biofortified parameters.…”

“…The results of genotypic path analysis showed that dry matter content and marketable tuber yield had practical importance in selection of potato genotypes for high tuber yield per hectare. 24…”

The Use of Chlorophyll Fluorescence as an Indicator of Predicting Potato Yield, Its Dry Matter and Starch in the Conditions of Using Microbiological Preparations

“…Understanding the genetic variability of potato traits is critical to developing effective breeding strategies, improving crop yields, food quality, and adapting crops to changing environmental conditions [60][61][62][63][64].…”

“…Selecting cultivars with stable characteristics for cultivation can help in the more efficient use of resources such as water, fertilizers, and energy. Appropriate adaptation of agricultural practices to the genetic characteristics of plants may contribute to the creation of sustainable agriculture [44,55,62].…”