First Report of <i>Colletotrichum siamense</i> Causing Stem Tip Dieback of Sacha Inchi (<i>Plukenetia volubilis</i>) in China

Wang, Weiwei; Li, Jie

doi:10.1094/pdis-03-20-0458-pdn

Cited by 4 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low selection intensity used in the present study (42%) was viable because the population was small. Future studies should assess other traits, such as unsaturated fatty acid content [7,8,[31][32][33] and disease resistance [34][35][36], that are relevant to the industry and farmers. TNF-total number of fruits per plant; TWF-total weight (g) of fruits per plant; TWS-total weight (g) of seeds per plant; MWF-mean weight (g) of fruits.…”

Section: Selection Gains In Sacha-inchi Progeniesmentioning

confidence: 99%

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

et al. 2022

View full text Add to dashboard Cite

Breeding programs for improvement of sacha-inchi, Plukenetia volubilis L., generally aim to select individuals with greater seed yield since there is a strong correlation between seed yield and oil production. However, the manual removal of seed husks for evaluating this trait is laborious and costly, thereby discouraging breeding efforts. Accordingly, the objective of the present study was to estimate gains from indirect selection of seed production in sacha-inchi progenies, focusing on maximizing efficiency in improvement programs. Genetic parameters along with direct and indirect selection gains were estimated for seed yield traits in 12 open-pollinated progenies. Strong genetic correlations were observed between total number of fruits (TNF), total weight of fruits (TWF), and total weight of seeds (TWS) per plant (r > 0.96). Notably, all three traits demonstrated high heritability (h2 > 0.81). Therefore, plants with high TNF and TWF (Cuzco, Dos de Mayo, Shanao, Aucaloma, and AM-7) can be used to indirectly select the genetic traits of higher seed yields (GS% = 23%). Genetic gain for dry seed production with a selection index of 42% was estimated at 23%, which corresponds to 118 kg.ha−1. Future sacha-inchi improvement programs can select progenies with high TNF and TWF to facilitate the selection of progenies with high TWS.

show abstract

Section: Selection Gains In Sacha-inchi Progeniesmentioning

confidence: 99%

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

et al. 2022

View full text Add to dashboard Cite

show abstract

Colletotrichum species and complexes: geographic distribution, host range and conservation status

2021

View full text Add to dashboard Cite

Pest categorisation of Colletotrichum aenigma, C. alienum, C. perseae, C. siamense and C. theobromicola

Bragard¹,

Baptista²,

Chatzivassiliou³

et al. 2022

EFS2

View full text Add to dashboard Cite

The EFSA Plant Health Panel performed a pest categorisation of Colletotrichum aenigma, C. alienum, C. perseae, C. siamense and C. theobromicola, five clearly defined fungi of the C. gloeosporioides complex causing anthracnose. The pathogens are widely distributed in at least three continents. C. aenigma and C. siamense are reported from Italy and C. alienum from Portugal, including the Madeira Islands, with a restricted distribution. C. perseae and C. theobromicola are not known to be present in the EU. However, there is uncertainty on the status of the pathogens worldwide and in the EU because of the taxonomic re-evaluation of the genus Colletotrichum and the lack of specific surveys. The pathogens are not included in Commission Implementing Regulation (EU) 2019/2072 and there are no reports of interceptions in the EU. With the exception of C. perseae, which has a very limited number of hosts, the other four Colletotrichum species have relatively wide host ranges. Therefore, this pest categorisation focused on those hosts for which there is robust evidence that the pathogens were formally identified by a combination of morphology, pathogenicity and multilocus sequence analysis. Host plants for planting and fresh fruits are the main entry pathways into the EU. Host availability and climate suitability factors occurring in some parts of the EU are favourable for the establishment of the pathogens. No yield losses have been reported so far in the EU but in non-EU areas of their current distribution, the pathogens have a direct impact on cultivated hosts that are also relevant for the EU. Phytosanitary measures are available to prevent the further introduction and spread of C. aenigma, C. alienum and C. siamense into the EU as well as the introduction and spread of C. perseae and C. theobromicola. C. aenigma, C. alienum, C. perseae, C. siamense and C. theobromicola satisfy the criteria that are within the remit of EFSA to assess for these species to be regarded as potential Union quarantine pests.

show abstract

First Report of Colletotrichum siamense Causing Stem Tip Dieback of Sacha Inchi (Plukenetia volubilis) in China

Cited by 4 publications

References 7 publications

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

Colletotrichum species and complexes: geographic distribution, host range and conservation status

Pest categorisation of Colletotrichum aenigma, C. alienum, C. perseae, C. siamense and C. theobromicola

Contact Info

Product

Resources

About