NDLI: Heterosis for protein, digestibility, fiber, and water soluble carbohydrates in nine sources of orchardgrass germplasm

Content Provider	Springer Nature Link
Author	Robins, Joseph G. Bushman, B. Shaun Escriba, Sandra Jensen, Kevin B.
Copyright Year	2015
Abstract	Orchardgrass, or cocksfoot, (Dactylis glomerata L.) is one of the most important forage grasses used in temperate agriculture. Yet, genetic gains are slow and complicated owing to the perennial and autotetraploid nature of orchardgrass. The development of orchardgrass population hybrids may be a way to more efficiently make genetic gains through heterosis. In the study reported herein, we describe the results of a 3 year study of the effect of heterosis on the forage quality of orchardgrass population hybrids managed with supplemental irrigation at a Cache County, UT, USA field site. The population hybrids derived from the orchardgrass cultivars Latar, Paiute, and Potomac; and from six additional germplasm sources from Asia, Europe, and North America. Data reflected July and August harvests from 2008 to 2010 and included crude protein (CP), in vitro true digestibility (IVTD), neutral detergent fiber (NDF), and water soluble carbohydrates (WSC). There were differences (P < 0.05) among the population hybrids and the included check cultivars for each of the traits at both harvest points. Mid-parent heterosis was relatively common and there were several instances of high-parent heterosis and reciprocal effects. Additionally, the population hybrids possessed better mean phenotypic values than the cultivars for July CP (2 g kg−1), and August CP (4 g kg−1), IVTD (7 g kg−1), NDF (−9 g kg−1), and WSC (4 g kg−1). Overall, the results suggest that population hybrids may prove a feasible approach for orchardgrass forage quality improvement.
Starting Page	503
Ending Page	511
Page Count	9
File Format	PDF
ISSN	00142336
Journal	Euphytica
Volume Number	204
Issue Number	3
e-ISSN	15735060
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-01-06
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbohydrates Cocksfoot Dactylis glomerata Digestibility Fibre Heterotic groups Nutritive value Protein Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Horticulture Agronomy and Crop Science

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Dry matter yield combining ability among nine sources of orchardgrass germplasm

Agronomic Evaluation of the Results of Selection within Early Maturing Dactylis glomerata Germplasm

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Running title : Inheritance of concentration of water-soluble carbohydrates in cocksfoot Inheritance of the concentration of water-soluble carbohydrates and its relationship with the concentrations of fibre and crude protein in herbage of cocksfoot ( Dactylis glomerata L . )

A study of some variability in cocksfoot (Dactylis glomerata L.)

Heterosis for protein, digestibility, fiber, and water soluble carbohydrates in nine sources of orchardgrass germplasm

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