scholarly journals Evaluation of Novel Gerbera (Gerbera jamesonii Bolus ex. Hooker F.) Hybrids for Flower Quality Traits under Polyhouse Condition

2020 ◽  
Vol 15 (1) ◽  
pp. 93-96
Author(s):  
Aswath C ◽  
Rajiv Kumar
Keyword(s):  
Quantitative Traits ◽  
Block Design ◽  
Flower Colour ◽  
Quality Traits ◽  
Gerbera Jamesonii ◽  
Cut Flower ◽  
Randomized Block Design ◽  
Novel Traits ◽  
Flower Quality ◽  
Colour Chart

The present study was carried out to evaluate the performance of two gerbera hybrids IIHR15-7 and IIHR16-8 along with their parents and a commercial check, for flower quality traits under polyhouse condition in completely randomized block design, during 2016-17 to 2018-19. The hybrids IIHR15-7 and IIHR16-8 had been developed through the half-sib method of breeding with IIHR9 and Arka Ashwa, respectively, as parents. Data for three years were pooled and analyzed statistically. In both hybrids IIHR15-7 and IIHR16-8, all the quantitative traits were found to be on par with the respective commercial checks. They had novel flower colour (as per RHS Colour Chart) i.e. NN155A, White Group for IIHR 15-7 and 65A Red Purple Group for IIHR16-8, with semi-double and double forms of flowers, respectively. These hybrids are suitable for cut-flower and flower arrangement purposes. Further, these hybrids will be useful for developing new gerbera hybrids with novel traits.

scholarly journals Development and evaluation of novel gladiolus hybrid selections IIHRG-7 (IC620379) and IIHRG-11 (IC620380) for flower quality and Fusarium wilt resistance

2020 ◽  
Vol 15 (2) ◽  
pp. 147-152
Author(s):  
T M Rao ◽  
T Janakiram ◽  
S S Negi ◽  
C Aswath ◽  
M V Dhananjaya ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Block Design ◽  
Flower Colour ◽  
Gold Medal ◽  
Wilt Disease ◽  
Wilt Resistance ◽  
Fusarium Wilt Disease ◽  
Randomized Block Design ◽  
Flower Quality ◽  
Fusarium Wilt Resistance

The present study was carried out to evaluate the performance of two novel gladiolus hybrid selections IIHRG-7 and IIHRG-11 along with commercial checks, for flower quality traits and Fusarium wilt resistance in completely randomized block design, during 2012-13 to 2014-15. Three years data were pooled and analyzed statistically. The hybrid selections IIHRG-7 and IIHRG-11 had been developed through hybridization by crossing Arka Meera x Picardy and Gold Medal 412 x Arka Poonam, respectively followed by selection. IIHRG-7 has novel flower colour (as per RHS Colour Chart) i.e., Red-Purple (65.B) having Red-Purple (62.A) streaks with Red-Purple (67.B) splash and spike with variegated florets, while, IIHRG-11 has novel floret colour as Red (41.C) having Red (41.A) margin. Blotch Red (46.B) with yellow (13.C) border and resistance to Fusarium wilt disease. These hybrid selections are suitable for cut-flower and flower arrangement purposes. Further, these hybrid selections will be useful for developing new gladiolus hybrid selections with novel traits and resistance to Fusarium wilt disease.

scholarly journals Heterobeltiosis in French Marigold (Tagetes patula L.)

2016 ◽  
Vol 8 (8) ◽  
pp. 182
Author(s):  
Kanwar Priyanaka ◽  
Y. C. Gupta ◽  
S. R. Dhiman ◽  
R. K. Dogra ◽  
Sharma Madhu ◽  
...  
Keyword(s):  
Rainy Season ◽  
Quantitative Traits ◽  
Block Design ◽  
Tagetes Patula ◽  
Male Sterile ◽  
Randomized Block Design ◽  
Parental Material ◽  
The Mean ◽  
Parental Lines ◽  
Better Than

<p>The studies on heterosis were carried with four male sterile lines namely; ms<sub>7</sub>, ms<sub>8</sub>, ms<sub>9,</sub> ms<sub>10</sub> and 18 diverse pollinators as tester by using line × tester crossing programme. The 72 F<sub>1</sub> hybrids were produced and evaluated along with 22 parental lines during summer 2009 and rainy season 2009 in Randomized Block Design. Observations were recorded on nine quantitative traits during both the seasons. Highly significant variances for all the traits indicated the sufficient variability in the parental material for all the characters under study. The performance of F<sub>1</sub> hybrids was much better than the mean performance of parents during both the crop seasons. Appreciable heterosis was observed in all the characters, except flower weight in summer and plant height in rainy season.</p>

Assessment of genetic variability for quantitative characters in rice (Oryza sativa L.) under post flood situation in sali

2021 ◽  
Vol 58 (1) ◽  
pp. 43-48
Author(s):  
Dalibha Pathak ◽  
Umesh Ch. Kalita
Keyword(s):  
Grain Yield ◽  
Coefficient Of Variation ◽  
Quantitative Traits ◽  
Oryza Sativa L ◽  
Block Design ◽  
Genetic Advance ◽  
Spikelet Sterility ◽  
Rice Varieties ◽  
Randomized Block Design ◽  
Spikelets Per Panicle

Sixteen genotypes of rice (including one check) were evaluated on 18 quantitative traits during sali (August), 2018 in a randomized block design with three replications at Instruction cum Research Farm, Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat to study the nature and magnitude of variability, heritability and genetic advance under delayed sown condition. The analysis of variance for 18 quantitative traits revealed the presence of significant differences for grain yield and its component characters. The highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) was observed for chaffs per panicle followed by grains per panicle, spikelet sterility (%), spikelets per panicle, grain yield (kg/ha). A high heritability coupled with high genetic advance was observed for plant height (cm), spikelets per panicle, spikelet sterility (%), chaffs per panicle, grains per panicle, grain yield (g/hill), grain yield (kg/ha), biological yield (kg/ha), straw weight (kg/ha) and harvest index (%) indicating that selection might be effective for improvement of these characters under delayed sown condition with low input. From the findings of this investigation, one genotype viz., Gandhari emerged as the outstanding genotype which yielded 4170 kg/ha and could be directly used for cultivation in delayed sown situation with low inputs. Some other promising genotypes that yielded higher than the check Manoharsali under delayed sown condition were JR 29, JR 16, Basundhara and JR 60 and could be utilized as potential parental material in the hybridization programmes designed to develop suitable rice varieties for delayed sown situation.

scholarly journals AN INVESTIGATION ON HETEROSIS, GENERAL AND SPECIFIC COMBINING ABILITY FOR POD YIELD AND ITS CONTRIBUTING PARAMETERS IN OKRA [ABELMOSCHUS ESCULENTUS (L.) MOENCH]

2021 ◽  
Vol 9 (08) ◽  
pp. 334-341
Author(s):  
Shailesh Kapadia ◽  
◽  
Kirti Patel ◽  
P.K. Patel ◽  
Mempal D. ◽  
...  
Keyword(s):  
Combining Ability ◽  
Quantitative Traits ◽  
Block Design ◽  
Abelmoschus Esculentus ◽  
F1 Hybrids ◽  
Research Centre ◽  
Pod Yield ◽  
Randomized Block Design ◽  
Per Se ◽  
Almost All

The heterosis and combining ability studies were conducted by utilizing modified Line X Tester mating design involving 6 Lines and 9 testers of Okra [Abelmoschus esculentus (L.) Moench]. The breeding material involving fifty four F1 hybrids along with 15 parents with one commercial check were evaluated during Kharif 2020 in a Randomized Block Design (R.B.D.) with three replications at Research Centre of Goldking Biogene Private Limited with an aim to estimate the magnitude of heterosis and to identify the good parents and good hybrid combinations for pod yield and other quantitative traits. Among the parents GKOF-1, GKOF-5 and GOM-7 were found to be good general combiners for pod yield per plot. Among the lines GKOF-3, GKOF-4 and GKOF-6 and testers GKOM-4, GKOM-5, GKOM-7 and GKOM-9 were found to be involved in exhibiting significant sca effects for almost all characters. Among the crosses GKOF-2 X GKOM-5, GKOF-1 X GKOM-8 and GKOF-6 X GKOM-7 exhibited high per se performance for pod yield per plot. Further the cross GKOF-1 X GKOM-7, GKOF-4 X GKOM-9 and GKOF-6 X GKOM-4 revealed highest positively significant sca effects for pod yield per plot.

Current Status of Viral and Phytoplasma Diseases Affecting Gerbera Cultivation and Their Management

2021 ◽  
Vol 55 (2) ◽  
pp. 133-150
Author(s):  
K. K. Gautam ◽  
S. Kumar ◽  
S. K. Raj
Keyword(s):  
Management Strategies ◽  
Primary Source ◽  
Detection Methods ◽  
Current Status ◽  
Socioeconomic Impact ◽  
Gerbera Jamesonii ◽  
Cut Flower ◽  
Disease Symptoms ◽  
Flower Quality ◽  
Day By Day

Gerbera (Gerbera jamesonii) is a popular ornamental plant cultivated all over the world. It is grown in beds, pots and used as cut-flower in making bouquets and for decoration in ceremonial functions. Gerbera has been commercially cultivated by a large number of growers in India as a primary source of income, therefore, has high socioeconomic impact in floriculture industry. The gerbera cultivation areas in India are increasing day by day due to its uses and the market demands. Its cultivation has been hampered by a variety of diseases that affect its flower quality and quantity. Of them, the viral and phytoplasma diseases cause considerable losses in gerbera cultivation. In this review, we have described about the disease symptoms, detection methods and identification of causal virus and phytoplasma pathogens affecting gerbera production worldwide and their disease management strategies opted by the researchers for production of pathogen-free plants.

scholarly journals Influence of long days on the production of cut chrysanthemum cultivars

2018 ◽  
Vol 36 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Alessandra S Zandonadi ◽  
Ciro Maia ◽  
José Geraldo Barbosa ◽  
Fernando Luiz Finger ◽  
José Antônio S Grossi
Keyword(s):  
Vegetative Growth ◽  
Morphological Traits ◽  
Block Design ◽  
Agronomic Performance ◽  
Cut Flower ◽  
Randomized Block Design ◽  
The World ◽  
Two Factors ◽  
Agronomic Quality ◽  
Time Required

ABSTRACT Chrysanthemum is one of the most widely marketed cut flower in the world. For this flower cultivation, long days to induce vegetative growth are required, until the plant reaches the necessary size for commercial flowering. The aim of this study was to evaluate the influence of the number of long days on the production of floral stems of five cut chrysanthemum cultivars. The experiment was evaluated in a randomized block design with split plots, with two factors and three replicates. Considering the number of long days (21, 28, 35, 42 and 49) the plots, and sub-plots the cut chrysanthemum cultivars (Calábria, Dragon, Sheena, Apricot Repin and Rebasco). We noticed significant differences for most of morphological traits for number of long days, and for interaction of cultivar x number of long days. Dragon, Apricot Repin and Calábria were the cultivars which stood out producing greater vigor of stems and better agronomic quality. Sheena and Rebasco cultivars showed the lowest performance among the evaluated cultivars, though. The cut chrysanthemum cultivars showed agronomic performance which allows a reduction in the number of long days of exposure, from 35-45 days usually practiced, to 21-28 days, reducing the time required for commercialization.

scholarly journals Peranan Larutan Pengawet terhadap Mutu Bunga Potong Alpinia Selama Peragaan

2016 ◽  
Vol 21 (2) ◽  
pp. 185 ◽  
Author(s):  
Dwi Amiarsi ◽  
Pudji K Utami
Keyword(s):  
Citric Acid ◽  
Microbial Growth ◽  
Block Design ◽  
Cut Flower ◽  
Cut Flowers ◽  
Acid Ph ◽  
Randomized Block Design ◽  
Bud Opening ◽  
Concentration Levels

Larutan perendam (pulsing) merupakan suatu larutan yang diberikan segera pada bunga sebelum pengiriman untuk memberi tambahan energi, melindungi tangkai bunga dari serangan mikroorganisme penyebab penyumbatan, dan menunda kelayuan. Penelitian ini bertujuan memperoleh komposisi larutan perendam yang tepat dalam upaya memperpanjang masa kesegaran bunga potong Alpinia. Penelitian dilakukan sejak  Agustus 2005 sampai dengan Februari 2006 di Kebun Percobaan Pasarminggu, Balai Penelitian Tanaman Hias.Tiga jenis bahan pengawet digunakan dalam penelitian ini, yaitu gula pasir dengan lima taraf konsentrasi 5, 10, 15, 20, dan 25% serta AgNO3 50 ppm dan asam sitrat 50 ppm (pH 3-4) dengan lama perendaman 2 dan 10 jam. Penelitian menggunakan rancangan acak kelompok faktorial dengan lima ulangan dan lima tangkai bunga potong per unit perlakuan. Hasil penelitian menunjukkan bahwa larutan perendam yang mengandung  AgNO3 50 ppm + gula 20% + asam sitrat 50 ppm (pH 3-4) dengan perendaman selama 2 jam memberikan hasil terbaik, yaitu masa kesegaran bunga potong mencapai 11,22 hari (atau 5,56 hari lebih lama dibanding tanpa perendaman) dengan persentase pembukaan braktea  sebesar 33,14%. Hasil penelitian ini dapat dimanfaatkan untuk merancang pengaturan suplai bunga potong ke pasar.<br /><br /><br /><br />Pulsing solution is commonly used to prolong vaselife by dipping the flower stalks in a solution containing sugars and germicides before delivering to give energy and to prevent the plugging of stalks by microbial growth, and to postpone wilting of flowers. The experiment was conducted to determine the appropriate composition of pulsing solution to prolong vaselife of Alpinia cut flowers. Three kinds of pulsing solution were tested in the experiment i.e. sucrose with concentration levels of 5, 10, 15, 20, and 25%, 50 ppm AgNO3, and 50 ppm citric acid (pH 3-4) with dipping periods of  2 and 10 hours. The experiment was arranged in a completely  randomized block design with five replications and five cut flowers stalks per treatments. The results indicated that pulsing solution containing 50 ppm AgNO3 + 20% sugar + 50 ppm citric acid (pH 3-4) with the 2 hours dipping period was the best treatment exhibited vaselife up to 11.22 days or 5.56 days longer than control, and with bud opening of 33.14%. The result implies that the such method can be exploited to arrange cut flower supply to the market.

scholarly journals Flower Quality, Flower Number, and Western Flower Thrips Density on Transvaal Daisy Treated with Granular Insecticides

1998 ◽  
Vol 8 (4) ◽  
pp. 567-570 ◽  
Author(s):  
Raymond A. Cloyd ◽  
Clifford S. Sadof
Keyword(s):  
Frankliniella Occidentalis ◽  
Block Design ◽  
Western Flower Thrips ◽  
Gerbera Jamesonii ◽  
Flower Number ◽  
Flower Thrips ◽  
Randomized Complete Block Design ◽  
Flower Tissue ◽  
Four Blocks ◽  
Flower Quality

Greenhouse studies were conducted to determine the efficacy of two granular systemic insecticides, acephate (Pinpoint 15G) and imidacloprid (Marathon 1G), against western flower thrips (Frankliniella occidentalis Pergande) on Transvaal daisy (Gerbera jamesonii H. Bolus ex. Hook. f). These studies were arranged in a randomized complete-block design with four blocks and four treatments per block. Two rates of acephate (0.75 g/16.5-cm pot and 1.0 g/16.5-cm pot) and one rate of imidacloprid (1.3 g/16.5-cm pot) were used in two studies. Plants were artificially inoculated with five adult western flower thrips at the prebloom stage. Plants were evaluated each week for flower quality (1 = complete injury or flower distortion to 5 = no injury), thrips density per flower, and number of plants flowering in each plot. Both studies showed that the acephate treated plants had the best flower quality, lowest numbers of thrips, and greatest number of plants flowering compared to imidacloprid and the check. These studies demonstrate that granulated acephate exhibits some activity in flower tissue and may assist growers in managing western flower thrips in floricultural crops.

scholarly journals Agronomic performance and genetic dissimilarity among cherry tomato genotypes

2018 ◽  
Vol 36 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Gabriel M Maciel ◽  
Rafael R Finzi ◽  
Fábio J Carvalho ◽  
Guilherme R Marquez ◽  
Andressa A Clemente
Keyword(s):  
Genetic Divergence ◽  
Quantitative Traits ◽  
Block Design ◽  
Agronomic Performance ◽  
Cherry Tomato ◽  
Clustering Methods ◽  
Germplasm Bank ◽  
Randomized Block Design ◽  
Dunnett's Test ◽  
Tomato Genotypes

ABSTRACT The genotypes evaluation in a germplasm bank is essential to determine their commercial or usefulness, as potential parents, in a breeding program. We aimed to detect the genetic diversity of 42 tomato genotypes of cherry type, belonging to the germplasm bank of the Federal University of Uberlândia and, also evaluate their behavior. The experiment was conducted in a greenhouse in randomized block design with 42 treatments and two replications. Ten quantitative traits of agronomic importance were evaluated. The genetic divergence was obtained by multivariate analysis, using the Mahalanobis distance with different clustering methods (UPGMA and Tocher). The hybrids performance was compared by Scott-Knott (p= 0.05) and Dunnett’s test (p= 0.05). UPGMA and Tocher grouped the genotypes similarly, representing genetic divergence satisfactorily. The genotypes UFU 29, UFU 21 and UFU 07 were more productive, earlier and also divergent from the pre-commercial treatment (UFU 200), being able to be used as potential parents.

scholarly journals Effect of pruning systems on growth and yield traits of greenhouse grown bell pepper (Capsicum annuum L. var. grossum)

2018 ◽  
Author(s):  
Ismeet Singh ◽  
Amarjeet Kaur
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Capsicum Annuum ◽  
Block Design ◽  
Growth And Yield ◽  
Yield Traits ◽  
Quality Traits ◽  
Capsicum Annuum L ◽  
Yield And Quality ◽  
Randomized Block Design

The present investigation was carried out during 2016-2017 with the objective of observing the effect of the tested systems of pruning on vegetative, fruiting, yield and quality traits of capsicum varieties. The experiment was laid out in a factorial randomized block design with four replications and nine treatments with Indra, Bachata and Inspiration cultivars of capsicum pruned with three intensities i.e. two shoots, four shoots and un-pruned (control). The results showed that the two stem pruning treatment significantly affected the plant growth and flowering characteristics in terms of plant height (194.75cm), number of days to first flower (20.25 days) in cv. Indra. Same cultivar when left un-pruned recorded more number of fruits per plant (23.64 fruits), but fruit yield per plant (4.14kg) was observed in four stem pruning treatment in Indra cultivar of capsicum than other cultivars tried.

Sign in / Sign up

Export Citation Format

Share Document