scholarly journals Effect of different modes of pollination on quantitative and qualitative parameters of Egyptian Clover, Trifolium alexandrinum L.

2014 ◽  
Vol 6 (2) ◽  
pp. 605-611
Author(s):  
M. K. Jat ◽  
O. P. Chaudhary ◽  
H. D. Kaushik ◽  
Sunita Yadav ◽  
A. S. Tetarwal
Keyword(s):  
Seed Germination ◽  
Seed Yield ◽  
Seed Weight ◽  
Trifolium Alexandrinum ◽  
Open Pollination ◽  
Seed Setting ◽  
Lower Yield ◽  
Insect Pollination ◽  
Egyptian Clover ◽  
Hand Pollination

The effect of different modes of pollination on quantitative and qualitative parameters of Egyptian clover, Trifolium alexandrinum L. was studied at Forage Section, Department of Genetics and Plant Breeding, CCS, Haryana Agricultural University, Hisar during 2012 and 2013. Maximum seed setting (81.5%) was recorded in A. mellifera pollination with an 8 frame colony (BP-8F) followed by 4 frame colony (BP-4F) (75.1%), open pollination (OP) (73.8%) and 2 frame colony (BP-2F) (71.5%). Maximum seed yield (2662.3 seeds) was observed in treatment BP-8F followed by BP-4F (2373.8), OP (2316.3) and BP-2F (2235.5). Still lower yield of 2103.0 seeds was found in hand pollination (HP) treatment that was significantly higher than the without insect pollination (WIP) treatment (1114.2). Minimum 1000-seed weight was observed in WIP (2.64 g). The seed weight of BP-4F (3.30), HP (3.20), BP-2F (3.17) and OP (3.03), the heaviest seeds were recorded in BP-8F (3.62 g/1000 grains) and it was at par with the treatment BP-4F (3.30 g). Highest seed germination per cent was recorded in BP-8F (94.7) followed by OP (90.7%). Lowest germination was found in WIP (84.7%). Though some work has been done on this aspect in India but comprehensive pollination studies has not been worked out.

scholarly journals Growth and Yield Performance of Bari Mung-5 Under Different Time of Sowing

2012 ◽  
Vol 36 (2) ◽  
pp. 227-231
Author(s):  
Nargis Jahan ◽  
M M Golam Adam
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Harvest Index ◽  
Dry Matter ◽  
Growth And Yield ◽  
Lower Yield ◽  
Sowing Time ◽  
Academy Of Sciences ◽  
Pod Length

A field experiment was carried out at University of Dhaka from March to July, 2011 to study the effect of time of sowing on the growth and yield of BARI mung-5. The treatments consisted of three dates of sowing viz. March 15, April 15 and May 15. The crop responded significantly to sowing time and 15 April sowing seeds produced plants having maximum plant height (68.4 cm), leaves/plant (29.33), total dry matter/plant (17.99), branches/plant (8.17), pods/plant (11.33), pod length (8.78 cm), seeds/pod (11.17), 1000 seed weight (46.52 g), seed yield/plant (5.33 g), yield/ha (1.77 t) and harvest index (29.58 %) at harvest. The seed yield decreased by 36.8 and 49.9% when seed sown early (15 March) or late (15 May) due to production of lower yield components.   DOI: http://dx.doi.org/10.3329/jbas.v36i2.12966   Journal of Bangladesh Academy of Sciences, Vol. 36, No. 2, 227-231, 2012    

scholarly journals Correlations and path analyses of yield and other sunflower seed characters

Genetika ◽  
2013 ◽  
Vol 45 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Velimir Radic ◽  
Jelena Mrdja ◽  
Sreten Terzic ◽  
Bosko Dedic ◽  
Aleksandra Dimitrijevic ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Yield ◽  
Seed Weight ◽  
Sunflower Seed ◽  
Genetic Parameters ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Path Analyses ◽  
Parental Lines ◽  
Effect On Yield

Ten sunflower commercial female parental lines were evaluated for various parameters under field conditions to estimate genetic parameters, correlation coefficient, and path analyses. Interactions of seed germination, 1000 seed weight, oil and protein content with seed yield were examined. After three years of observations, positive significant correlations were found while comparing seed yield with 1000 seed weight. Negative significant correlations were found by comparing seed yield and seed germination. Positive but not significant correlation was found while comparing seed yield with oil content in sunflower seed. Path coefficient analysis indicates that 1000 seed weight has maximum positive and seed germination maximum negative direct effect on yield.

scholarly journals Effect of different modes of pollination on yield parameters of summer squash (Cucurbita pepo L.) in India

2016 ◽  
Vol 8 (2) ◽  
pp. 550-554 ◽  
Author(s):  
D. Devika Rani ◽  
Sunita Yadav ◽  
H.D. Kaushik ◽  
G. Narendra Kumar
Keyword(s):  
Cucurbita Pepo ◽  
Fruit Size ◽  
Fruit Weight ◽  
Open Pollination ◽  
Insect Pollination ◽  
Yield Parameters ◽  
Equatorial Diameter ◽  
Summer Squash ◽  
Hand Pollination ◽  
Polar Diameter

Effect of different modes of pollination, viz., without insect pollination, hand-pollination, open-pollination and open-pollination + hand-pollination on yield parameters of 4 summer squash (Cucurbita pepo L.) hybrids viz., Parikrama, Chandra, Chamatkar and Gold Queen was studied at Research Farm of the Department of Entomology, CCS Haryana Agricultural University, Hisar during 2014. Irrespective of different hybrids, the treatment openpollination + hand-pollination and open-pollination produced the maximum number of fruits per plant (73.50 and 71.25%, respectively) followed by hand-pollination (59.08%) and no fruits were observed (0% fruit set) under without insect pollination treatment. Average fruit weight, fruit polar diameter and equatorial diameter were maximum (135.30 g, 3.74 cm and 3.47 cm, respectively) under open-pollination + hand-pollination, while these were minimum (94.81 cm, 2.14cm and 2.48 cm, respectively) under hand-pollination treatment. These results indicate that honey bees as well as wild pollinators are utmost essential for pollination of summer squash flowers and thus increasing fruit size and yield. Therefore pollinators conservation practices should be followed in summer squash growing areas for getting higher yield and returns.

Seed yield in caraway (Carum carvi). 1. Role of pollination

1995 ◽  
Vol 124 (2) ◽  
pp. 235-244 ◽  
Author(s):  
H. J. Bouwmeester ◽  
H. G. Smid
Keyword(s):  
Environmental Factors ◽  
The Netherlands ◽  
Seed Yield ◽  
Seed Set ◽  
Insect Pollination ◽  
Hand Pollination ◽  
Wet Weather ◽  
Seed Yields ◽  
Field Plots

SUMMARYSeed yields of caraway vary considerably between years, indicating that weather affects the yield-determining processes. Pollination could be one of these processes, because pollinator activity and efficiency are negatively affected by cold or wet weather. From 1990 to 1992 at the Research Institute for Agrobiology and Soil Fertility in Wageningen, The Netherlands, field and glasshouse experiments were performed to study the importance of pollination for caraway seed yields and the effects of some environmental factors. Preventing insect pollination by placing gauze cages in field plots reduced the yield of caraway by c. 15–20%, but under normal field conditions > 90% of hermaphrodite flowers were fertilized and additional hand-pollination did not improve yield. Removal of competing umbels enhanced the low seed set percentages in higher-order umbels, indicating that pollination did not limit seed yield in these umbels. Assays suggested that wind transfer, in addition to insects, plays a role in the pollination of caraway. It was concluded that assimilate availability and not pollination limits caraway seed yield.

Effect of Different Sowing Dates and Timings of Last Cut on Yield Attributes and Seed Yield of Berseem (Trifolium alexandrinum L.)

2020 ◽  
Author(s):  
Surinder Singh ◽  
Kanwaljit Singh ◽  
Tarandeep Kaur
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
High Speed ◽  
Trifolium Alexandrinum ◽  
Seed Setting ◽  
Forage Crops ◽  
Sowing Time ◽  
Yield Attributes ◽  
Sowing Dates ◽  
Green Fodder

Background: Many genetical, physiological, environmental and organizational constraints associated with the low productivity of forage crops, but the most important among them is lack of quality seeds of improved cultivars to farmers. Scarcity of green fodder and low seed setting forces the farmers not to prefer for seed production. Weather extremities like unbalanced or untimely rains or high speed winds also affected seed setting. All these extremities lead to scarcity of berseem seed in Punjab and farmer are forced to paying high prices at the time of sowing. Maintaining the proper sowing time and time of last cut for fodder and for leaving the crop for seed production may help in keeping the balance between vegetative and reproductive phases for high seed yield to tackle these problems. Therefore, optimum sowing time and last cut is a very deciding factor to achieve maximum green fodder and seed yield. The current experiment aimed to study the effect of different sowing dates and timings of last cut on yield attributes and seed yield of berseem (Trifolium alexandrinum L.).Methods: In this experiment, crop was sown on five different dates with the broadcast method and also three dates of last cut of crop left for seed production. These treatments were replicated thrice. All other cultural practices were also maintained for optimum berseem productivity. The first cutting of fodder was taken after 55 days from sowing and thereafter 30 days interval. After the time of last cut, crop was left for seed production. At maturity, data on yield attributes were recorded. Results: Our investigations revealed that late sown berseem increased the yield attributes and seed yield but decreased the green fodder yield. Therefore to get maximum seed production, it is suggested that late sown 20th October has the optimum date of sowing and optimum time for leave the crop is 25th March for seed production.

Intercropping faba bean with some legume crops for control of Orobanche crenata

2002 ◽  
Vol 50 (1) ◽  
pp. 1-6 ◽  
Author(s):  
B. R. Bakheit ◽  
A. Y. Allam ◽  
A. H. Galal
Keyword(s):  
Seed Yield ◽  
Faba Bean ◽  
Seed Weight ◽  
Dry Weight ◽  
Orobanche Crenata ◽  
Major Objective ◽  
Egyptian Clover ◽  
Straw Yield ◽  
100 Seed Weight ◽  
Number Of Branches

Experiments involving the intercropping faba bean with each of lupin, fenugreek and Egyptian clover as well as growing faba bean alone were carried out at Assiut University on a farm naturally infested with Orobanche in two seasons. The major objective of the study was to investigate the effect of different intercropping combinations with faba bean on the infestation with Orobanche. The results obtained revealed that intercropping faba bean with each of lupin, fenugreek and Egyptian clover markedly reduced the Orobanche crenata Forsk infestation of faba bean. the number of branches, the height of the first pod, the number of pods, the seed yield and the number and dry weight of Orobanche spikes were significantly affected by the intercropping treatments, but these had no significant influence on plant height, straw yield or 100-seed weight. intercropping faba bean with each of lupin, fenugreek and Egyptian clover increased the faba bean seed yield, consequently the economic return was also increased.

Effects of genotype and environment on seed yield and quality of rice

2005 ◽  
Vol 143 (4) ◽  
pp. 283-292 ◽  
Author(s):  
P. KRISHNAN ◽  
A. V. SURYA RAO
Keyword(s):  
Correlation Analysis ◽  
Analysis Of Variance ◽  
Seed Yield ◽  
Environmental Effects ◽  
Seed Weight ◽  
Grain Filling ◽  
Seed Longevity ◽  
Seed Setting ◽  
Yield And Quality ◽  
Seed Leachate

Seed yield and seed quality determine much of the value of rice (Oryza sativa L.) crops to the producers. The effects of genotype and environment on seed yield and quality were investigated using 12 rice genotypes grown during 3 years (2000–2003) at four different sowing dates in India, where detailed environmental data were collected. Yield, seed weight, proportion of seed setting and quality in terms of potential seed longevity, proportion of discoloured seeds, seed leachate conductivity and percentage germination were evaluated. The results were subjected to analysis of variance and the influence of environmental factors was evaluated by correlation analysis. Analysis of variance suggested that proportion of seed setting, seed leachate conductivity, potential seed longevity, percentage seed germination and proportion of seed discoloration were influenced more by environmental effects than by genotypic effects. In contrast, yield, panicle number, seed weight, and proportion of high-density grains were influenced more by genotypic than by environmental effects. The significant interaction effects of genotype and environment for all characteristics were attributed to differential resistance of genotypes to lodging (caused by increased plant height, low radiation and excessive rain at the time of grain filling) and were associated with fewer panicles harvested, lower seed setting and lower seed weight. Correlation analysis suggested that warm weather conditions with high solar radiation and without excessive rains during grain filling stage gave the best rice seed yield with high quality.

Influence of time of sowing and last cut for fodder on the fodder and seed yields of Egyptian clover

2000 ◽  
Vol 134 (3) ◽  
pp. 285-291 ◽  
Author(s):  
VIRENDER SARDANA ◽  
SHAMSHER SINGH NARWAL
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Trifolium Alexandrinum ◽  
Percentage Increase ◽  
Sowing Time ◽  
Egyptian Clover ◽  
Field Investigations ◽  
Green Fodder ◽  
Fodder Yield ◽  
Seed Yields

Field investigations were conducted during the winter seasons of 1992/93 and 1993/94 to find the optimum sowing time and time of last fodder cut for the fodder and seed production of Egyptian clover (Trifolium alexandrinum L.). The delay in sowing from 1 October to 15 November decreased the green and dry fodder yields but increased the seed yields. Total green and dry fodder yields (of all cuttings) for 1 or 15 October sowings were significantly higher than the 15 November sowing in both years and 1 November sowing in 1992/93. Increase in seed yield from the 15 November sowing was greater than from the 1 and 15 October sowings. Straw yields followed similar trends. Delay in the last cut for fodder, however, increased green and dry fodder yields but decreased the seed yield. The percentage increase in dry fodder yield with each successive delay in last cut for fodder was higher than that of green fodder yield. The 11 April cutting date of fodder produced the highest green and dry fodder yields but the lowest seed yield. Two years mean data showed that the 2 March cutting date of last fodder gave the highest seed yield. It is concluded that higher seed yield of Egyptian clover can be produced by sowing on 15 November and giving the last fodder cutting on 2 March.

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