Cup quality profiles of Robusta Coffee Wilt Disease Resistant Varieties grown in three Agro‐ecologies in Uganda

2021 ◽  
Author(s):  
Joseph Mulindwa ◽  
Archileo Natigo Kaaya ◽  
Lawrence Muganga ◽  
Moses Paga ◽  
Pascal Musoli ◽  
...  
Keyword(s):  
Wilt Disease ◽  
Robusta Coffee ◽  
Disease Resistant ◽  
Resistant Varieties ◽  
Cup Quality

scholarly journals Cloning, characterization and expression analysis of NBS-LRR-type resistance gene analogues (RGAs) in coconut

2016 ◽  
Vol 75 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Kaitheri Edathil Rachana ◽  
Sudalaimuthu Asari Naganeeswaran ◽  
Thayale Purayil Fayas ◽  
Regi Jacob Thomas ◽  
Muliyar Krishna Rajesh
Keyword(s):  
Resistance Gene ◽  
Quantitative Polymerase Chain Reaction ◽  
Polymerase Chain Reaction Analysis ◽  
Wilt Disease ◽  
High Identity ◽  
Disease Resistant ◽  
Resistant Varieties ◽  
Polymerase Chain ◽  
Genomic Regions ◽  
Resistant Genotypes

AbstractCoconut palms are highly susceptible to diseases caused by different pathogens, and replanting with resistant varieties is the best way to manage them. Obtaining a collection of resistance gene analogues (RGAs) is an effective strategy to identify genomic regions linked to disease resistance. We have successfully used a comparative genomics approach to amplify putative RGAs from the coconut root (wilt) disease resistant cultivar Chowghat Green Dwarf (CGD) by using primers designed based on conserved motifs of the NBS-LRR domain of the date palm. The amplified sequences were cloned, sequenced and characterized. The coconut RGAs had high identity to monocot NBS-LRRs. A complete structural analysis and 3-D modeling of the NBS domain of coconut RGA was also undertaken. Real-time quantitative polymerase chain reaction analysis indicated that the isolated coconut NBS-LRR class RGAs was expressed more in root (wilt) disease resistant genotypes than in susceptible ones. This study would provide a base for future efforts to map disease resistant traits in coconut.

scholarly journals Производство и фитосанитарная оценка семенных клубней картофеля в лесостепи Приобья Алтайского края

2019 ◽  
Author(s):  
N.V. Chevychelova ◽  
E.I. Sedykh ◽  
S.V. Zharkova ◽  
V.I. Leunov
Keyword(s):  
Seed Potato ◽  
Potato Production ◽  
Seed Potato Production ◽  
Planting Time ◽  
Potato Varieties ◽  
Altai Region ◽  
Disease Resistant ◽  
Resistant Varieties ◽  
Research Findings ◽  
Production Indices

Представлены результаты исследований производства семенного картофеля в условиях Алтайского края. Дана оценка отечественных сортов картофеля репродукции элита по производственным показателям и по фитосанитарному состоянию клубней к моменту их посадки. По каждому заболеванию, зафиксированному в Алтайском крае, выделены наиболее устойчивые сорта.The research findings on seed potato production in the Altai Region are discussed. The domestic potato varieties of elite reproduction are evaluated according to their production indices and phytosanitary condition of tubers at planting time. The most disease resistant varieties have been identified for each disease recorded in the Altai Region.

THE ROLE OF DISEASE-RESISTANT VARIETIES IN INCREASING THE YIELD OF BLACK CURRANTS IN THE TRANS-URALS

2021 ◽  
pp. 16-21
Author(s):  
Vera Alekseevna Morkovina ◽  
Igor Nikolaevich Porsev ◽  
Valentina Vladimirovna Polovnikova ◽  
Mariya Valentinovna Karpova
Keyword(s):  
Disease Resistant ◽  
Resistant Varieties

scholarly journals Seasonal and altitudinal differences in coffee leaf rust epidemics on coffee berry disease-resistant varieties in Southwest Ethiopia

2019 ◽  
Vol 44 (3) ◽  
pp. 244-250 ◽  
Author(s):  
Gerba Daba ◽  
Kenny Helsen ◽  
Gezahegn Berecha ◽  
Bart Lievens ◽  
Adugna Debela ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Coffee Berry ◽  
Southwest Ethiopia ◽  
Coffee Berry Disease ◽  
Disease Resistant ◽  
Resistant Varieties ◽  
Coffee Leaf Rust

Identification and Screening of Introduced Tomato Varieties Resistant to late Blight

2012 ◽  
Vol 610-613 ◽  
pp. 3472-3477
Author(s):  
Dan Luo ◽  
Xi Chun Zhang ◽  
Xiao Han Wen
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
New Disease ◽  
Tomato Production ◽  
Disease Resistant ◽  
Resistant Varieties ◽  
Detached Leaves ◽  
Late Blight Disease ◽  
Blight Disease ◽  
Selection Of

Tomato late blight disease that infected by Phytophthora infestans (Mont.) de Bary has already become one of the main obstacles that influence the tomato production. To resolve tomato late blight disease, cultivating the disease-resistant breed is importance. Based on the previous study, different introduced varieties were used as materials in this test for the identification and varieties selection of tomato resistant to late blight, by measuring the DIS of inoculated seedlings and detached leaves. It indicated that Jingle 502 and O-33-1 are possible to become resistant varieties to late blight or the parents for cultivating new disease resistant varieties.

scholarly journals Green bean biochemical attributes of Arabusta coffee hybrids from Kenya using HPLC and soxhlet extraction methods

2021 ◽  
pp. 201-208
Author(s):  
Jane Jerono Cheserek ◽  
Kahiu Ngugi ◽  
James Wanjohi Muthomi ◽  
Chrispine O Omondi ◽  
Njoroge Kihara Ezekiel
Keyword(s):  
Principal Component ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Chlorogenic Acids ◽  
Green Beans ◽  
Arabica Coffee ◽  
Robusta Coffee ◽  
Biochemical Compounds ◽  
Coffee Oil ◽  
Cup Quality

Robusta coffee yields higher than Arabica coffee. However, it is limited by the inferior cup quality. The biochemical compounds found in coffee interact and determines the final cup quality. The objective of the study was to characterize the biochemical compounds found in Arabusta coffee hybrids. Twenty coffee genotypes including the Arabusta hybrids, backcrosses, Robusta and Arabica coffee were established at KALRO-Alupe (Busia) and Siaya -ATC in the year 2015. Coffee cherry was harvested and processed in the year 2018 and the green beans were analysed for sucrose, oil, trigonelline, caffeine and chlorogenic acids using the HPLC and soxhlet method. There were significant differences amongst the genotypes for these biochemical compounds across the two different environments (Busia and Siaya counties). Robusta recorded higher levels of caffeine and chlorogenic acids while the Arabusta hybrids recorded intermediate levels of the biochemical compounds between the Robusta and Arabica coffee species. The Genotype by Environment (G x E) interaction effect was only significant for chlorogenic acids. Caffeine, sucrose, oil and trigonelline levels were significantly high for genotypes evaluated in Siaya when compared to Busia. Chlorogenic acid had a positive significant association with caffeine, but was negatively correlated with coffee oil and sucrose. Coffee oil indicated a positive significant association with sucrose and Trigonelline. The Principal Component Analysis (PCA) differentiated the genotypes based on the levels of biochemical compounds indicating high genetic variation amongst the genotypes. Arabusta hybrids exceeded Robusta coffee in performance of biochemical compounds which implies that there was a successful introgression of quality genes

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