scholarly journals Estimation of heterobeltiosis in F1 hybrids of China aster [Callistephus chinensis (L.) Nees]

2019 ◽  
Vol 11 (1) ◽  
pp. 1-6
Author(s):  
Bhargav Veluru ◽  
Rajiv Kumar ◽  
Manjunatha T. Rao ◽  
Usha Bharathi T. ◽  
Dhananjaya M.V. ◽  
...  

Heterosis over better parents was estimated in thirty crosses of China aster involving six lines viz., Matsumoto Pink, Matsumoto Red, Matsumoto Rose, Matsumoto Yellow, Matsumoto Scarlet and Matsumoto White and five testers viz., Phule Ganesh Violet, Phule Ganesh Purple, IIHRJ3-2, IIHRG13 and Local White during 2016-17 at ICAR-Indian Institute of Horticultural Research, Bengaluru during 2016-17. Results revealed that the cross L6 × T5 exhibited highest positive significant heterobeltiosis at 5% level of significance for plant height (33.85), flower stalk length (73.76), number of flowers per plant (101.18), weight of flowers per plant (47.90) and flower yield per hectare (47.91). The cross L1 x T3 exhibited maximum negative heterobeltiosis for days to first flowering (-47.41). L5 x T4 recorded the maximum positive heterobeltiosis (at 5%) for flower head diameter (26.44) and 100 flower weight (3.41).

2017 ◽  
Vol 9 (4) ◽  
pp. 2073-2078
Author(s):  
Sheena Nain ◽  
B. S. Beniwal ◽  
R. P. S. Dalal ◽  
Sonu Sheoran

The present study was conducted at experimental orchard of Department of Horticulture, CCS Haryana Agricultural University, Hisar (Haryana), India with a view to optimize pinching time and spacing in African marigold for achieving better growth, flowering and yield. Design of the experiment was factorial Randomized Block Design with three replications. Experiment comprises of two levels of pinching (no pinching & pinching at 28 DAT i.e. Days After Transplanting) and three levels of spacing (40 x 40 cm, 40 x 30 cm & 30 x 30 cm) in all possible combinations. Maximum number of branches/plant (12.11), plant spread (63.59 cm), fresh weight of plant (358.79 g), number of buds/plant, duration of flowering (53.95 days), number of flowers/plant (54.54), stalk length and flower yield/plant (403.68 g) and flower yield/hectare (33.33 t) were significantly recorded in plants pinched at 28 DAT at 5% level of significance, whereas, maximum plant height (73.52 cm), flower diameter (6.38 cm), fresh weight of flower (8.93 g) was obtained in un-pinched plants. In case of spacing, maximum plant spread (64.01 cm), primary branches/plant (11.42), fresh weight of plant (370.20 g), number of buds/plant, number of flowers/plant (51.43), duration of flowering (53.98 days), flower diameter (6.42 cm), fresh weight of flower (9.03 g), flower yield/plant (460.42 g) was recorded at 40 x 40 cm, whereas, maximum plant height (71.76 cm), stalk length, flower yield/hectare (36.34 t) was observed with 30 x 30 cm. Results revealed that plants pinched at 28 DAT with widest spacing (40 x 40 cm) were found best for better growth, flowering and yield of African marigold.


2017 ◽  
Vol 2 (02) ◽  
pp. 110-117
Author(s):  
Joginder Singh ◽  
Rashmi Nigam ◽  
Manoj Nazir ◽  
Anant Kumar ◽  
Harpal Singh

A field experiment on chrysanthemum cv. Birbal Sahni was conducted for revealed the Effect of NPK on vegetative growth, flowering and yield of chrysanthemum (Dendranthema grandiflora Ramat) at Department of Horticulture, C. C. S. University, Meerut, U.P., India for the field investigation with optimum amount of inorganic fertilizers with three increasing levels of NPK i.e. N1 (100 kg N2 + 60 kg P2O5 + 40 kg K2O/ ha), N2 (150 kg N2 +120 kg P2O5 + 80 kg K2O/ ha) and N3 (200 kg N2 + 180 kg P2O5 + 120 kg K2O/ ha). Maximum plant height (cm), plant spread (cm), diameter of main stem (cm), number of leaves/ plant, number of branches/ plant, number of flowers/ plant, flower weight/ plant (g), Flower yield (q/ ha), shelf life (days) observed with amount of N3 (200 kg N2 + 180 kg P2O5 + 120 kg K2O/ ha) spread (cm). The minimum days recorded for days taken to appearance of first flower bud and days taken to flowering and also NPK level N3 significantly affected the flower stalk length (cm) and flower size (cm) in chrysanthemum cv. Birbal Sahni during the investigation.


2020 ◽  
Vol 49 (4) ◽  
pp. 1111-1117
Author(s):  
Bidanchi S Marak ◽  
Sunil Kumar ◽  
Kalkame CH Momin

Effects of organic manures and bio-fertilizers on growth, flowering and yield of China aster (Callistephus chinensis) var. kamini was investigated. The experiment with 12 treatment combinations comprising of FYM, vermicompost and bio-fertilizers viz., phosphate solublising bacteria (PSB) and Azospirillum was conducted. All the treatment combinations showed significant response in vegetative, flowering and yield characters during the entire investigation. The treatment combinations of Azospirillum + PSB + vermicompost + 50% RDF was found to be promising for maximum plant height (63.97 cm), plant spread (21.50 cm), stem girth (15.47 mm), number of primary branches per plants (12.33), number of secondary branches per plants (22.14), enhanced flower bud emergence (73.33 days), stalk length (32.20 cm), number of flowers per plant (24.35), flower diameter (46.18 mm), prolonged flower duration (23.05 days), flower yield (18.87 q/ha) and seed yield (2.44 q/ha) were on par with Azospirillum + PSB + FYM + 50% RDF.


Author(s):  
Srabani Das ◽  
Tapas Mandal ◽  
Safiuddin Ahmed Khan

To investigate the effects of environmental factors on tulip (Tulipa sp.) cultivars in the plains of West Bengal, a field experiment was conducted with ten tulip cultivars, considered as ten treatments (T) (T1=Apeldorn, T2=Maureen, T3=Holland Cich, T4=Day Dream, T5=Pussima Design, T6=Avignon, T7=Roi-du-midi, T8=Clear Water, T9=Colouch and T10=Jumbo Beauty), at Horticultural Research Station, Bidhan Chandra Krishi Viswavidyalaya, Mondouri, Nadia, West Bengal, India in two successive years of 2013-14 and 2014-15. Flower yield, flower length (cm), flower diameter (cm), plant height (cm) etc were observed and statistically analyzed and correlation was done between the morphological data and the environmental factors. The results showed that the short duration cultivars could be more suitable for cultivation under the short and mild winter conditions of the plains of West Bengal.


2016 ◽  
Vol 8 (1) ◽  
pp. 232-235
Author(s):  
Likhitha Raj ◽  
Siddappa Siddappa ◽  
S. Varalakshmi ◽  
H. M. Vikas ◽  
C. H. Girjakumari

The study was conducted to determine the effect of pre harvest spray of micronutrients like boron, zinc and its combination on post harvest quality and vase life of carnation. Post harvest quality of flowers like flower stalk length (65.61 cm) was maximum in the plant treated with zinc (0.3 per cent), and calyx splitting (3.12 per cent) was minimum in the plants treated with boron (0.1 per cent). Flower diameter (6.64 cm) was highest with boron (0.1 per cent) + zinc (0.3 per cent) treatment. Plants without micronutrient treatment produced poor quality flowers. Regarding vase life studies maximum water uptake and minimum transpiration loss from first day to sixteenth day was resulted in the flowers which are obtained from the plant treated with boron (0.1 per cent). The maximum fresh weight of the flower was noticed in combination of boron (0.1 per cent) + zinc (0.3 per cent) from first to sixteenth day. The foliar spray of boron (0.1 per cent) recorded maximum vase life (11.05 days). So the good quality of flowers can be improved by the foliar spray of zinc, calyx splitting can be controlled by boron foliar spray and vase life of the flower can be maintained by foliar spray of boron. It is confirmed that the foliar application of micronutrient is very much helpful for the improvement of post harvest quality and vase life of carnation.


2017 ◽  
Vol 9 (1) ◽  
pp. 364-369
Author(s):  
Airadevi P. Angadi ◽  
B. S. Reddy ◽  
R. C. Jagadeesha ◽  
Balaji S. Kulkarni ◽  
S. Nishani

The study pertaining to the effect of summer season on correlation analysis in bird of paradise (Strelitzia reginae) was carried out among forty progenies. The results of correlation analysis for twelve parameters (plant height, stem girth, leaf length, leaf width, number of leaves per plant, number of suckers/m 2 , flower stalk length, flower stalk girth, spath length, no. of bracts, vase life and no. of flowers/ m 2 ) at genotypic and phenotypic levels revealed that number of flowers per m 2 of progenies during summer, 2011 showed positive and significant correlations with plant height (0.357 and 0.237) and number of suckers/ m2 (0.880 and 0.899). Whereas, it showed positive and significant correlation with stem girth (0.203), leaf width (0.202) and flower stalk girth (0.265) at genotypic level only. While during summer 2012, number of flowers per m 2 showed positive correlations with plant height (0.265 and 0.242), stem girth (0.232 and 0.215), number of suckers/ m 2 (0.913 and 0.900) and flower stalk length (0.268 and 0.249) at genotypic and phenotypic levels. Hence, the selection of these characters would be effective in improving yield in bird of paradise crop.


1970 ◽  
Vol 21 ◽  
pp. 17-22
Author(s):  
M. Z. Antonyuk ◽  
T. S. Iefimenko ◽  
A. G. Navalikhina ◽  
T. K. Ternovska

Aim. Develop inheritance model for glume color in hybrid generations considering introgressive origin of crossing components. Methods. Phenotypic assessment of the trait, cytological study of chromosome conjugation in meiosis, methods determining statistical significance of the results. Results. Twelve cross combinations of wheat introgressive with one another and with recurrent genotype Aurora were studied. Selected for the crosses introgressive lines had contrasting glume color trait. Characteristics of wheat introgressive lines and its hybrids which would be important in hybrid analysis for the development of the inheritance model were identified. Genetic analysis of the introgressive lines was done as for the number of glume color genes for which lines differed from one another and from the Aurora genotype. Conclusions. In case the critical gene in localized in a chromosome that do not conjugate with hom(e)olog of the cross partner, F1 hybrids developed with introgressive lines form gametes and zygotes with frequencies differing from theoretically expected for the cross of homozygous lines. Keywords: wheat introgression lines, Aegilops, glume colour, aneuploidy gametes and zygotes, meiotic drive.


2005 ◽  
Vol 5 ◽  
pp. 490-495 ◽  
Author(s):  
Kuntal Das ◽  
Raman Dang ◽  
T. N. Shivananda ◽  
Pintu Sur

A greenhouse experiment was conducted at the Indian Institute of Horticultural Research (IIHR), Bangalore to study the interaction effect between phosphorus and zinc on their availability in soil in relation to their contents in stevia (Stevia rebaudiana). The results show that the amount of available P and Zn content in soil has been found to increase initially and, thereafter, the amount of the same decreased with the progress of plant growth up to 60 days irrespective of treatments. The amount of P and Zn in soils showed an increase with their separate applications either as soil or foliar spray while that of the same value significantly decreased both in soils and plants due to their combined applications, suggesting a mutual antagonistic effect between Zn and P affecting each other’'s availability in soil and content in the stevia plant.


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