Crown rust on oat genotypes with different levels of resistance: damages and losses
ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust in oat genotypes. New resistance sources are constantly required for yield stabilization and costs reduction. This study aimed to characterize the crown rust resistance of oat genotypes and the disease´s productive and economic impact. Experiments were conducted in two environments, with and without chemical control. Resistance was measured by disease progress, apparent rate of infection, final severity and pustule size. Damages were based on reduction of yield, 1000 grain mass and hectoliter mass. UFRGS16Q6030-2 was immune. In both environments, UFRGS166091-2 and URS Brava exhibited the greatest level of resistance and the smallest grain yield reduction, while URS 22 was highly susceptible, reducing more than 70% of its grain yield. These results surpass the negative impacts of the disease previously reported in oats, particularly related to grain yield. The data presented in this paper highlighted the importance of genetic resistance, particularly partial resistance, for maintaining oat genetic yield potential, reducing environmental contamination with less fungicides, and increasing economic gains with oat cultivation..
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2021 |
|---|---|
| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:51 |
|---|---|
| Enthalten in: |
Ciência Rural - 51(2021), 3 |
| Sprache: |
Englisch ; Portugiesisch |
|---|
| Beteiligte Personen: |
Maike Lovatto [VerfasserIn] |
|---|
| Links: |
doi.org [kostenfrei] |
|---|
| Themen: |
Agriculture |
|---|
| doi: |
10.1590/0103-8478cr20200298 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
DOAJ007395965 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | DOAJ007395965 | ||
| 003 | DE-627 | ||
| 005 | 20230309223854.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 230225s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1590/0103-8478cr20200298 |2 doi | |
| 035 | |a (DE-627)DOAJ007395965 | ||
| 035 | |a (DE-599)DOAJb588d044a452453197bec254610a8e00 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng |a por | ||
| 050 | 0 | |a S1-972 | |
| 100 | 0 | |a Maike Lovatto |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Crown rust on oat genotypes with different levels of resistance: damages and losses |
| 264 | 1 | |c 2021 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 520 | |a ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust in oat genotypes. New resistance sources are constantly required for yield stabilization and costs reduction. This study aimed to characterize the crown rust resistance of oat genotypes and the disease´s productive and economic impact. Experiments were conducted in two environments, with and without chemical control. Resistance was measured by disease progress, apparent rate of infection, final severity and pustule size. Damages were based on reduction of yield, 1000 grain mass and hectoliter mass. UFRGS16Q6030-2 was immune. In both environments, UFRGS166091-2 and URS Brava exhibited the greatest level of resistance and the smallest grain yield reduction, while URS 22 was highly susceptible, reducing more than 70% of its grain yield. These results surpass the negative impacts of the disease previously reported in oats, particularly related to grain yield. The data presented in this paper highlighted the importance of genetic resistance, particularly partial resistance, for maintaining oat genetic yield potential, reducing environmental contamination with less fungicides, and increasing economic gains with oat cultivation. | ||
| 650 | 4 | |a Avena sativa | |
| 650 | 4 | |a Puccinia coronata f. sp. avenae | |
| 650 | 4 | |a genetic resistance | |
| 650 | 4 | |a economic analysis. | |
| 653 | 0 | |a Agriculture | |
| 653 | 0 | |a S | |
| 653 | 0 | |a Agriculture (General) | |
| 700 | 0 | |a Gerarda Beatriz Pinto da Silva |e verfasserin |4 aut | |
| 700 | 0 | |a Filipe Kalikoski Coelho |e verfasserin |4 aut | |
| 700 | 0 | |a José Antonio Martinelli |e verfasserin |4 aut | |
| 700 | 0 | |a Marcelo Teixeira Pacheco |e verfasserin |4 aut | |
| 700 | 0 | |a Luiz Carlos Federizzi |e verfasserin |4 aut | |
| 700 | 0 | |a Carla Andréa Delatorre |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i In |t Ciência Rural |d Universidade Federal de Santa Maria, 2004 |g 51(2021), 3 |w (DE-627)DOAJ000112046 |x 16784596 |7 nnns |
| 773 | 1 | 8 | |g volume:51 |g year:2021 |g number:3 |
| 856 | 4 | 0 | |u https://doi.org/10.1590/0103-8478cr20200298 |z kostenfrei |
| 856 | 4 | 0 | |u https://doaj.org/article/b588d044a452453197bec254610a8e00 |z kostenfrei |
| 856 | 4 | 0 | |u http://www.scielo.br/pdf/cr/v51n3/1678-4596-cr-51-03-202000298.pdf |z kostenfrei |
| 856 | 4 | 0 | |u http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782021000300201&tlng=en |z kostenfrei |
| 856 | 4 | 2 | |u https://doaj.org/toc/1678-4596 |y Journal toc |z kostenfrei |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_DOAJ | ||
| 951 | |a AR | ||
| 952 | |d 51 |j 2021 |e 3 | ||