Effect of Clodinafop-Propargyl and Mesosulfuron-Methyl Herbicides on Wild Oat (Avena ludoviciana) Control under Moisture Stress Condition

2017 ◽  
Vol 20 (5) ◽  
pp. 1-7
Author(s):  
Mahdi Aghabeigi ◽  
Mohsen Khodadadi
Keyword(s):  
Stress Condition ◽  
Moisture Stress ◽  
Wild Oat ◽  
Clodinafop Propargyl

scholarly journals Evaluation of staygreen sunflower lines and their hybrids for yield under drought conditions

Helia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Harshavardan J. Hilli ◽  
Shobha U. Immadi
Keyword(s):  
Seed Yield ◽  
Stress Condition ◽  
Moisture Stress ◽  
Inbred Lines ◽  
Root Characteristics ◽  
Stay Green ◽  
Drought Tolerant ◽  
Positive Heterosis ◽  
Hybridization Programme ◽  
Spad Readings

Abstract The experimental material for the present study comprised of 28 inbred lines (including two checks) which were developed by mutation and hybridization among the lines from AICRP trials MARS, UAS, Dharwad and on the basis of SPAD readings and stay green nature, they were considered as drought tolerant lines. These lines were used for the present experiment and were evaluated under both normal and moisture stress condition in rain out shelter to study their root characteristics. Among 28 inbreds evaluated, eight inbred lines i.e. DSR-13, DSR-19, DSR-23, DSR-24, DSR-37, DSR-66, DSR-107 and DSR-132 were identified as drought tolerant nature which exhibited least reduction in their yield under moisture stress condition. Simultaneously hybridization programme was also initiated during summer 2018 using these 28 inbred lines as testers (males) and 5 CMS lines as female lines in Line × Tester fashion. Among 140 hybrids developed, only 40 F1 hybrid combinations were further analyzed for heterosis and combining ability studies along with four checks RHA 6D-1, RHA 95C-1, KBSH-53 and Cauvery Champ. Most of the hybrid combinations showed significant negative heterosis for flowering indicating earliness, and also all the combinations showed a positive heterosis for plant height indicating tallness dominant over dwarf checks. The combinations CMS 7-1-1 A × DSR-37 (624 kg/ha), CMS-853A × DSR-19 (624 kg/ha), and CMS-853A × DSR-23 (619 kg/ha) exhibited significant maximum heterosis for seed yield (kg ha−1) over the checks KBSH-53 (496.50 kg/ha) and Cauvery Champ (486.50 kg/ha) showing maximum seed yield per hectare.

scholarly journals Evaluation of Maize (Zea mays L.) Genotypes for Morphological and Root Characters under Excessive Moisture Stress Condition

2020 ◽  
Vol 9 (1) ◽  
pp. 839-847
Author(s):  
Satish Chandra Narayan ◽  
Manigopa Chakraborty ◽  
Krishna Prasad ◽  
Savita Ekka ◽  
Milan Kumar Chakravarty ◽  
...  
Keyword(s):  
Zea Mays ◽  
Stress Condition ◽  
Zea Mays L ◽  
Moisture Stress

scholarly journals QTL detection and putative candidate gene prediction for leaf rolling under moisture stress condition in wheat

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Aakriti Verma ◽  
M. Niranjana ◽  
S. K. Jha ◽  
Niharika Mallick ◽  
Priyanka Agarwal ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Candidate Gene ◽  
Linkage Map ◽  
Ssr Markers ◽  
Stress Condition ◽  
Recombinant Inbred Lines ◽  
Snp Array ◽  
Moisture Stress ◽  
Potential Candidate ◽  
Leaf Rolling

Abstract Leaf rolling is an important mechanism to mitigate the effects of moisture stress in several plant species. In the present study, a set of 92 wheat recombinant inbred lines derived from the cross between NI5439 × HD2012 were used to identify QTLs associated with leaf rolling under moisture stress condition. Linkage map was constructed using Axiom 35 K Breeder’s SNP Array and microsatellite (SSR) markers. A linkage map with 3661 markers comprising 3589 SNP and 72 SSR markers spanning 22,275.01 cM in length across 21 wheat chromosomes was constructed. QTL analysis for leaf rolling trait under moisture stress condition revealed 12 QTLs on chromosomes 1B, 2A, 2B, 2D, 3A, 4A, 4B, 5D, and 6B. A stable QTL Qlr.nhv-5D.2 was identified on 5D chromosome flanked by SNP marker interval AX-94892575–AX-95124447 (5D:338665301–5D:410952987). Genetic and physical map integration in the confidence intervals of Qlr.nhv-5D.2 revealed 14 putative candidate genes for drought tolerance which was narrowed down to six genes based on in-silico analysis. Comparative study of leaf rolling genes in rice viz., NRL1, OsZHD1, Roc5, and OsHB3 on wheat genome revealed five genes on chromosome 5D. Out of the identified genes, TraesCS5D02G253100 falls exactly in the QTL Qlr.nhv-5D.2 interval and showed 96.9% identity with OsZHD1. Two genes similar to OsHB3 viz. TraesCS5D02G052300 and TraesCS5D02G385300 exhibiting 85.6% and 91.8% identity; one gene TraesCS5D02G320600 having 83.9% identity with Roc5 gene; and one gene TraesCS5D02G102600 showing 100% identity with NRL1 gene were also identified, however, these genes are located outside Qlr.nhv-5D.2 interval. Hence, TraesCS5D02G253100 could be the best potential candidate gene for leaf rolling and can be utilized for improving drought tolerance in wheat.

Control of wild oat in the year of smooth bromegrass establishment and its effect on the yield and quality of subsequent seed crops

1999 ◽  
Vol 79 (3) ◽  
pp. 447-453 ◽  
Author(s):  
A. L. Darwent ◽  
J. R. Moyer
Keyword(s):  
Avena Fatua ◽  
Visual Control ◽  
Bromus Inermis ◽  
Wild Oat ◽  
Smooth Bromegrass ◽  
Yield And Quality ◽  
Herbicide Treatments ◽  
The Mean ◽  
Seed Yields ◽  
Clodinafop Propargyl

Wild oat (Avena fatua L.) control from three graminicides, clodinafop-propargyl, fenoxaprop-p-ethyl and tralkoxydim, in seedling stands of smooth bromegrass (Bromus inermis L.) seeded alone or with spring wheat (Triticum aestivum L.) was studied in 1991, 1992 and 1993 at Beaverlodge, Alberta. Seed yield and quality were measured for 2 yr after each year of establishment. In the year of establishment, clodinafop-propargyl at 60 g ha–1 consistently provided ≥80% visual control of wild oat growing in smooth bromegrass seeded with wheat, while the mean probability of similar applications of fenoxaprop-p-ethyl at 92 g ha−1 and tralkoxydim at 250 g ha−1 to provide ≥80% visual control of wild oat, averaged over the years of establishment, was 0.91 and 0.92, respectively. Without the wheat companion crop, the mean probability of clodinafop-propargyl to provide ≥80% visual control of wild oat, averaged over establishment years, remained above 0.90, but that for fenoxaprop-p-ethyl and tralkoxydim was reduced to 0.36 and 0.50, respectively. The efficacy of the three graminicides to control wild oat was reduced by tank mixing with bromoxynil plus MCPA, thifensulfuron methyl plus MCPA, or MCPA alone. Establishment with wheat had a major detrimental impact on smooth bromegrass seed yields harvested 1 and 2 yr after each establishment year. Smooth bromegrass seed yields harvested 1 yr following the year of establishment were three times greater where smooth bromegrass was seeded alone as compared with being seeded with wheat. Seed yields harvested 2 yr after the year of establishment followed a similar trend, but the differences were smaller. Herbicide treatments had no effect on either first or second smooth bromegrass seed yields. Wild oat dockage was present only in the first smooth bromegrass seed crop and was approximately three times greater following establishment with wheat than following establishment alone. Percent wild oat dockage was less from plots where herbicides had been applied than from weedy check plots. Differences in percent dockage occurred among herbicide treatments but were small. Key words: Smooth bromegrass, Bromus inermis, wild oat, Avena fatua, graminicides, tank mixtures

scholarly journals Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (Avena sterilis ssp. ludoviciana)

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2350
Author(s):  
Fatemeh Benakashani ◽  
Jose L. Gonzalez-Andujar ◽  
Elias Soltani
Keyword(s):  
Seed Germination ◽  
Soil Water ◽  
Management Practices ◽  
Integrated Management ◽  
Wild Oat ◽  
Avena Sterilis ◽  
Germination Characteristics ◽  
Cereal Fields ◽  
The Right ◽  
Clodinafop Propargyl

Herbicide resistance can affect seed germination and the optimal conditions required for seed germination, which in turn may impose a fitness cost in resistant populations. Winter wild oat [Avena sterilis L. ssp. ludoviciana (Durieu) Gillet and Magne] is a serious weed in cereal fields. In this study, the molecular basis of resistance to an ACCase herbicide, clodinafop-propargyl, in four A. ludoviciana biotypes was assessed. Germination differences between susceptible (S) and ACCase-resistant biotypes (WR1, WR2, WR3, WR4) and the effect of Isoleucine-1781-Leucine mutation on germination were also investigated through germination models. The results indicated that WR1 and WR4 were very highly resistant (RI > 214.22) to clodinafop-propargyl-contained Isoleucine to Leucine amino acid substitution. However, Isoleucine-1781-Leucine mutation was not detected in other very highly resistant biotypes. Germination studies indicated that resistant biotypes (in particular WR1 and WR4) had higher base water potentials than the susceptible one. This shows that resistant biotypes need more soil water to initiate their germination. However, the hydrotime constant for germination was higher in resistant biotypes than in the susceptible one in most cases, showing faster germination in susceptible biotypes. ACCase-resistant biotypes containing the Isoleucine-1781-Leucine mutation had lower seed weight but used more seed reserve to produce seedlings. Hence, integrated management practices such as stale seedbed and implementing it at the right time could be used to take advantage of the differential soil water requirement and relatively late germination characteristics of ACCase-resistant biotypes.

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