Universität zu Köln

Baturaygil, Ali ORCID: 0000-0003-1691-5662, Stetter, Markus G. and Schmid, Karl (2021). Breeding Amaranth for Biomass: Evaluating Dry Matter Content and Biomass Potential in Early and Late Maturing Genotypes. Agronomy-Basel, 11 (5). BASEL: MDPI. ISSN 2073-4395

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Abstract

Amaranth (Amaranthus spp.) is a promising biomass crop for silage and biogas production. Under long-day conditions, it exhibits prolonged vegetative growth. To evaluate the breeding potential of amaranth for biomass production, we characterized phenotypic variation in biomass yield components, quantitative genetic parameters, and the relationships between traits. We conducted field trials of 10 biomass-type genotypes exhibiting a 'giant' growth habit derived from spontaneous hybridization between genetically diverse parents, and used the variety Barnkrafft as check. We observed two contrasting growth patterns: Barnkrafft is a variety for grain production and was characterized by a short vegetative growth followed by a long seed ripening. In contrast, the biomass genotypes displayed a long vegetative growth followed by a short seed ripening. We observed strong correlations between dry matter content and stem diameter (r =-0.78, p < 0.01) and between plant height and biomass score (r = 0.95, p < 0.001). High values for broad-sense heritability of stem diameter (H-2 = 0.88) and plant height (H-2 = 0.92) suggest that the dry matter content and yield can be improved by indirect phenotypic selection. We hypothesize that selection for dry matter content and yield implies a trade-off between earliness and photoperiod sensitivity. Hence, dry matter content should be improved first by recurrent selection, which can be then combined with short-day genes to improve dry matter yield. Overall, this work provides an avenue to the breeding of biomass amaranth.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Baturaygil, Ali UNSPECIFIED orcid.org/0000-0003-1691-5662 UNSPECIFIED Stetter, Markus G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmid, Karl UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-572040
DOI:	10.3390/agronomy11050970
Journal or Publication Title:	Agronomy-Basel
Volume:	11
Number:	5
Date:	2021
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2073-4395
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BIOGAS PRODUCTION; OUTCROSSING RATE; CURRENT STATE; MAIZE; YIELD; HETEROSIS; FORAGE; L.; DENSITY; BIOLOGY Multiple languages Agronomy; Plant Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57204