scholarly journals Absorption and Translocation of Glyphosate by Carrot Infected by Swamp Dodder

1991 ◽  
Vol 116 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Thomas A. Bewick ◽  
Larry K. Binning ◽  
Nelson E. Balke
Keyword(s):  
Daucus Carota ◽  
Carrot Root ◽  
Treated Leaf ◽  
Cuscuta Gronovii

Absorption of “C-labeled glyphosate by whole carrot (Daucus carota L.) plants infected or not infected by swamp dodder (Cuscuta gronovii Willd ex R & S) increased from 14% 1 day after treatment to 56% 14 days after treatment. Absorption of 14C-labeled glyphosate did not increase from 14 to 45 days after treatment. 14Carbon-labeled glyphosate appeared in the carrot root 1 day after application and its concentration increased with time in both infected and noninfected plants until 14 days after treatment. From 14 to 45 days after treatment, the concentration of 14C-labeled glyphosate in the roots decreased. At 1 day after treatment, dodder tissue contained as much 14C-labeled glyphosate as any physiological sink in the carrot. At 45 days after treatment, dodder tissue contained more 14C-labeled glyphosate than all other physiological sinks, except the petiole of the treated leaf. Swamp dodder stems had absorbed 14C-labeled glyphosate directly from a solution within 1 day after treatment. Chemical name used: N-(phosphonomethyl)glycine (glyphosphate).

Effectiveness of Glyphosate in Broomrape (Orobanchespp.) Control in Four Crops

Weed Science ◽  
1980 ◽  
Vol 28 (6) ◽  
pp. 692-699 ◽  
Author(s):  
R. Jacobsohn ◽  
Y. Kelman
Keyword(s):  
Pisum Sativum ◽  
Vicia Faba ◽  
Daucus Carota ◽  
Broad Bean ◽  
Lycopersicum Esculentum ◽  
Root Yield ◽  
Orobanche Crenata ◽  
Carrot Root ◽  
Green Kernel ◽  
Kernel Yield

We studied the effectiveness of glyphosate [N-(phosphono-methyl)glycine] for the control ofOrobanchespp. in the field when applied to the crop foliage prior to the emergence of the parasite. The bestOrobanchecontrol in October-sown carrots (Daucus carotaL.) parasitized byOrobanche crenataForsk. andO. aegyptiacaPers. and in December-sown broad bean (Vicia fabaL.) and peas (Pisum sativumL.) parasitized byO. crenatawas obtained by spraying twice, 2 weeks apart, in late January and in February, respectively. Carrot root yield remained unaffected by glyphosate at rates up to 200 g/ha. In heavily infested fields, carrots were irreversibly damaged by earlyOrobancheparasitism. The highest yields of pods of broad beans occurred after two or three applications of 150 g/ha glyphosate. Peas were seriously damaged by 150 g/ha. Two or three sprays of 50 g/ha glyphosate resulted in the highest green-kernel yield of pea where the soil was not heavily infested. Glyphosate effectively reducedO. cernuaLoeffl. emergence in non-irrigated tomatoes (Lycopersicum esculentumMill.), but was very phytotoxic to the crop. Glyphosate was highly effective in controllingOrobanchespp.; however, marginal selectivity may be sufficient in some crops and not in glyphosate-susceptible ones.

scholarly journals 034 Independence of the Reduced Pigment (rp) Gene and the Y and Y2 Loci in Carrot (Daucus carota L.)

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 447A-447
Author(s):  
Azumi Tozuka ◽  
N. Breitback ◽  
I.L. Goldman
Keyword(s):  
Daucus Carota ◽  
Carotenoid Content ◽  
Gene Model ◽  
Carrot Root ◽  
Daucus Carota L ◽  
Segregation Data ◽  
Data Support ◽  
Separate Locus ◽  
Yellow Orange ◽  
Pigment Biosynthesis

Five genes, including alleles at Y, Y1 and Y2, and the alleles I and IO, have been implicated in conditioning carrot root color. Various combinations of these alleles can condition white, yellow, and orange xylem and phloem color in carrot roots. The recently discovered reduced pigment gene, designated rp, conditions pale orange xylem and phloem and reduces carotenoid content by 92%. To determine if the rp gene is an allele of a previously described locus or a separate locus involved in pigment biosynthesis, we crossed rprp plants to plants with yellow phloem and yellow xylem (yellow/yellow) and to plants with purple phloem and yellow xylem (purple/yellow). We generated BC1 and F2 progenies for evaluation of segregation data. The expected genotype of plants with yellow xylem was yyY2Y2RPRP and the expected genotype of plants carrying rp was yyy2y2rprp. More than 1900 individual plants were evaluated for root color in 38 matings. In F2 progenies resulting from crosses of rprp × yellow/yellow, segregation data from 19 out of 20 families fit expected 12:3:1 (yellow: orange: rprp) or 15:1 (orange: non-orange) ratios (P < 0.001) indicating independence of the rp gene. In addition, 12 out of 16 families of F2 progenies from the cross between purple/yellow plants and rprp plants fit expected 12:3:1 (yellow: orange: rprp) ratios (P < 0.001) for a 2-gene model. These data support the hypothesis that the rp gene is independent and not linked to Y and Y2 genes.

scholarly journals 3-Deoxy-d-arabino-Heptulosonate 7-Phosphate Synthase from Carrot Root (Daucus carota) Is a Hysteretic Enzyme

1985 ◽  
Vol 79 (3) ◽  
pp. 765-770 ◽  
Author(s):  
Joann A. Suzich ◽  
Jeffrey F. D. Dean ◽  
Klaus M. Herrmann
Keyword(s):  
Daucus Carota ◽  
Carrot Root ◽  
Phosphate Synthase

Postattachment Control of Swamp Dodder (Cuscuta gronovii) in Cranberry (Vaccinium macrocarpon) and Carrot (Daucus carota)

1988 ◽  
Vol 2 (2) ◽  
pp. 166-169 ◽  
Author(s):  
Thomas A. Bewick ◽  
Larry K. Binning ◽  
Malcolm N. Dana
Keyword(s):  
Life Cycle ◽  
Field Study ◽  
Daucus Carota ◽  
Vaccinium Macrocarpon ◽  
Split Application ◽  
Sulfonium Salt ◽  
Cuscuta Gronovii

In a 3-y field study, the isopropylamine salt of glyphosate [N-(phosphonomethyl)glycine] at 1.7 kg ai/ha and sulphosate [trimethyl sulfonium salt of N-(phosphonomethyl)glycine] at three rates, a split application of 0.6 + 0.6 or single applications of 1.1 or 1.7 kg ai/ha satisfactorily controlled swamp dodder (Cuscuta gronoviiWilld. ex R. & S. # CVCGR) in cranberry (Vaccinium macrocarponAit.). While none of these treatments decreased cranberry yield, sulphosate at 1.1 or 1.7 kg/ha did increase yield. Glyphosate at 0.4 kg/ha applied late in the life cycle of carrot (Daucus carotaL.) when swamp dodder was in full flower satisfactorily controlled swamp dodder while increasing yield of carrot roots. Glyphosate applied early in the life cycle of carrot and dodder controlled swamp dodder but lowered yield of carrot roots.

scholarly journals Pengaruh Kosentrasi dan Frekuensi Pemberian Pupuk Hayati Bio-EXTRIM Terhadap Pertumbuhan dan Hasil Tanaman Wortel (Daucus carota L.) dalam Pot di Dataran Rendah

2019 ◽  
Vol 5 (2) ◽  
pp. 112
Author(s):  
Riana Amalia ◽  
Aluh Nikmatullah ◽  
Karwati Zawani
Keyword(s):  
Daucus Carota ◽  
Block Design ◽  
Sugar Content ◽  
Dry Weight ◽  
Growth And Yield ◽  
Leaf Biomass ◽  
Carrot Root ◽  
Daucus Carota L ◽  
Randomized Block Design ◽  
Two Factors

This study aimed to determine the effect of the concentration and frequency of Bio-EXTRIM biofertilizer applications and their interactions on the growth and yield of carrot (Daucus carota L.) plants cultivated using pots in the lowland. This research was conducted in the rice fields of Siren Hamlet, East Rumbuk Village, East Lombok sub-district, from March toJune 2019, and arranged according to the Randomized Block Design (RBD) factorial with two factors. The first factor was the concentration of  Bio-EXTRIM and the second factor was the frequency of Bio-EXTRIM applications; each consisted of 3 levels and thus resulted in 9 interractio. The interraction were: concentration of 0.25%  with 4 times application, concentration of  0.25% with 5 times application, concentration of 0.25% with 6 times application, concentration of 0.5% with 4 times application, concentration of 0.5% with 5 times application, concentration of 0.5% with 6 times application, concentration of 1% with 4 times application, concentration of 1% with 5  times application, and concentration of 1% with 6 times application. The results showes that the concentration of Bio-EXTRIM biofertilizer had significant effect on the rate of carrot leaf stalks growth, with concentration of 0.25% had the highest leaf stalk growth rate. The frequency of Bio-EXTRIM biofertilizer applications influenced the dry weight of leaf biomass, the middle diameter of the carrot root and the sugar content of the carrot root. The highest dry weight of leaf biomass and diameter of the tuber were obtained in carrot plants treated with Bio-EXTRIM biofertilizer for 4 times, while the sweetest tubers were obtained in carrot plants treated with Bio-EXTRIM biofertilizer for 6 times. However, there was no interaction between the concentration and frequency of Bio-EXTRIM biofertilizers in influencing the growth and yield of carrots grown in the pots in the lowlands

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