H2020Индивидуална стипендия2020–2022

GenSPaD · Genomic Selection for Pasture Digestibility

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2020-05-18 → 2022-06-01
Финансиране от ЕС: 196 591 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Геномният подбор при многогодишния райграс помага за създаване на сортове с по-добра смилаемост на фуража. Това повишава продуктивността на животните и може да намали емисиите на метан, което подпомага климатичната политика на ЕС.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Genomic Selection for Pasture Digestibility

Breeding for improved perennial ryegrass cultivars to support pastoral based production systems for milk and meat is a critically important goal. However, studies have shown that genetic gains for key traits such as forage quality have been modest over recent decades. New breeding technologies such as Genomic Selection (GS) can assist traditional breeding programmes. GS uses genome wide DNA markers to estimate breeding values on selection candidates. The main ways that GS can assist perennial ryegrass breeding is by shortening the selection cycle, increasing the accuracy of selection, and increasing the number of selection candidates that can be evaluated; thereby increasing the rate of genetic gain for key traits such as forage quality. Improving digestibility of the forage leads to an increase in animal performance, and is therefore an important target trait for forage breeders. Furthermore, it has already been shown that increases in organic matter digestibility can reduce methane emissions; a key target of the EUs climate and energy policy. The specific research objectives of the action were: (1) develop Near-Infrared Spectroscopy (NIRS) calibrations for a suite of forage quality parameters impacting animal performance and use NIRS to phenotype a training population, (2) develop and optimize genomic prediction equations on the training population, and (3) validate these prediction equations in subsequent generations. This action has led to the development of genomic breeding tools to improve forage quality in perennial ryegrass and assist in development of new cultivars for pastoral farming systems.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Breeding for improved perennial ryegrass (PRG) cultivars to support pastoral based production systems for milk and meat is a critically important goal. However, genetic gains for traits such as forage yield and quality have very much lagged behind genetic gain for agronomic traits in cereals. One reason for this is the long breeding cycle in a typical PRG breeding programme, where a single cycle of selection can take 5-6 years. Genomic selection (GS) is a form of marker assisted selection that simultaneously estimates all loci, haplotype, or marker effects across the entire genome to calculate Genomic Estimated Breeding Values (GEBVs). The main advantage that GS could offer PRG breeding is to enable multiple cycles of selection to be achieved in the same time it takes to do a single cycle of conventional selection, thereby increasing the rate of genetic gain. Improving digestibility of the forage leads to an increase in animal performance, and is therefore an important target trait for forage breeders. Furthermore, it has already been shown that increases in organic matter digestibility can reduce methane emissions. Reducing methane emissions is a key target of the EUs climate and energy policy. In this action I will focus on developing and validating GS equations for feed parameters that are being used as model inputs into the Cornell Net Carbohydrate and Protein System (CNCPS). This CNCPS is currently being adapted to predict nutritional value to the grazing animal in pasture based production systems, and it is envisaged that it will be able to identify feed parameters limiting milk-solid production and thereby direct future forage breeding efforts. The work of this action will lead to a novel and innovative forage breeding programme that can select for multiple feed parameters to develop the ideal forage cultivars for pasture production systems.

Оригинален текст от CORDIS (на английски).

Участници

TEAGASC - AGRICULTURE AND FOOD DEVELOPMENT AUTHORITY · CarlowКоординаторИрландия