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Pollination potentiality of different species of honey bees in increasing productivity of Chow-Chow (Sechium edule (Jacq) S.W): an overview
The yields of agricultural crops can be significantly increased through good management practices including effective pollination. Cucurbits mainly depend on insects for pollination because the male and female organs do not occur in the same flower and pollen grains are large and sticky to be carried by wind. Chow-chow is commonly called as chayote (Sechium edule (Jacq) Sw.) belongs to family Cucurbitaceae. The efficacy of different species of honey bees viz., Apis cerana, A. mellifera, A. florea and T. iridipennis in cross-pollination of chow-chow was studied during summer 2001 at Regional Research Station, University of Agricultural Sciences, GKVK, Bangalore. Activity of different insect p...
Bio-ecology of Stingless bees, Trigona iridipennis Smith. (Hymenoptera: Apidae) in GKVK campus: an overview
Stingless bees/Dammer bees are the smallest of the honey producing bees. Trigona and Melipona are the most important geera of stingless bees. Trigona is the largest and most widely distributed genus, which incluse 130 species under ten sub-genera. the present studies were taken with the following objectives 1) to study nesting charateristics, biology and seasonal variations, 2) to study foraging behaviour of Trigona iridipennis Smith in comparison with Apis cerena indica, 3) to identity the major food sources of T. iridipennis and A. cerena, 4) to study pollination potentiality of stinglees bee T. iridipennis on certain crops. The total period required from oviposition to adult emergence was...
Studies on pollination potentiality of Indian honeybee (Apis cerana Fab.) on Ocimum kilimandscharicum Guerke and Ocimum gratissimum L.
The efficacy of .Indian honeybee (Apis cerana Fab.) in cross pollination of Ocimum kilimandscharicum Guerke and O. gratissimum L. was studied during summer of 2002 at Regional Research Station, University of Agricultural Sciences, GKVK Campus, Bangalore. Activity of different insect pollinators including honeybee species and Pollination influence of Indian honeybee on percent filled and unfilled seeds, seeds per fruit, seeds per inflorescence, test weight and inflorescence oil yield was studied. The quantity and quality of nectar from Ocimum flowers was also estimated to know its impact on foraging activity.At flowering, O. kilimandscharicum and O. gratissimum was visited by totally 20 insec...
Meliponiculture around the globe: an overview of challenges and opportunities with a special focus to Kerala, India
Stingless bees are highly social insects which populated the tropical earth 65 million years ago longer than honey bees. They are limited to tropics and subtropics lacking venom apparatus and cannot sting. Impacts of anthropogenic influences on honey bees were already reported. Recent studies also showed that the nesting behaviour of Trigona (Tetragonula) iridipennis Smith in natural habitat also vary due to interaction, pheromones and environmental stimulus. Trigona iridipennis Smith shows great diversity in plant selection for dietary as well as resin sources. The shift towards ornamental plants for foraging may be an adaptation evolved in response to human modification of the environment. The bees collect resin from a variety of sources for building nest, its maintenance and also for defence. Bee traffic is found to be related to time, season, and strength of the colony. The study also highlights the various food sources of Trigona iridipennis Smith in Kerala which can be further explored for flourishing meliponiculture.
Pollinator diversity in Mango (Mangifera indica L.) across GKVK campus: an overview
Flower initiation in mango (var: “Mallika”) commenced at 21.83 ± 1.58 days after bud development and staminate : hermaphrodite flower ratio was 1:0.29. In each flower, one fertile and four staminoids were present. Staminate and hermaphrodite flowers opened during 0730-1000 hrs. and 0800-1100 hrs. and in them anther dehiscence occurred at 27.1 ± 3.1 and 29.3 ± 4.8 min. after anthesis, respectively. Fruit set (no./panicle) was 2.90 ±1.27 in unbagged and zero in bagged inflorescence. Total longevity of each flower was 81.96 ± 2.14 hrs. Forty five insect species found foraging on the inflorescence belonged to Hymenoptera (60%), Diptera (24.44%), Hemiptera (6.67%), Coleoptera (4.44%) and...
Recent Trends in Animal Behaviour
Proceedings of the 31st Annual Conference of Ethological Society of India, held at Bangalore during 10-12 April 2007.
Youth In Agriculture And Rural Development
During last one decade, rural India witnessed the continuous migration of rural youth to urban areas. This situation is very serious and alarming and the migration of rural youth created a vacuum in the villages. It has been observed and expressed by many enlightened persons that villages are becoming old age homes draining away the talented farm youth to stay away from farming. The contents of book covers the issues like youth-concept, characteristics, interests, aspirations; youth in natural resource management; ICT and rural youth; Extension approaches and strategies; SHGs and Group approaches; Mobilization of Rural Youth; Gender issues and women empowerment and successful case studies on farm youth. The major sub heads of the book are: FARM YOUTH IN AGRICULTURE, CAPACITY BUILDING OF RURAL YOUTH, ENTREPRENEURSHIP AMONG RURAL YOUTH, RURAL YOUTH AND INFORMATION COMMUNICATION TECHNOLOGY, WOMEN IN AGRICULTURE, RURAL YOUTH IN INTEGRATED FARMING, LEISURE TIME UTILIZATION BY RURAL YOUTH, CASE STUDIES ON RURAL YOUTH
Stingless Bees
Stingless bees (Meliponini) are the largest and most diverse group of social bees, yet their largely tropical distribution means that they are less studied than their relatives, the bumble bees and honey bees. Stingless bees produce honey and collect pollen from tens of thousands of tropical plant species and, in the process, provide critical pollination services in the tropics. Like many other insects, they are struggling with new human-made challenges like habitat destruction, climate change and new diseases. This book provides an overview of stingless bee biology, with chapters on the evolutionary history, nesting biology, colony organisation and division of labour of stingless bees. In addition, it explores their defence strategies, foraging ecology, and varied communication methods. Accordingly, the book offers an accessible introduction and reference guide for students, researchers and laypeople interested in the biology of bees.
Adaptive Soil Management : From Theory to Practices
The book focuses in detail on learning and adapting through partnerships between managers, scientists, and other stakeholders who learn together how to create and maintain sustainable resource systems. As natural areas shrink and fragment, our ability to sustain economic growth and safeguard biological diversity and ecological integrity is increasingly being put to the test. In attempting to meet this unprecedented challenge, adaptive management is becoming a viable alternative for broader application. Adaptive management is an iterative decision-making process which is both operationally and conceptually simple and which incorporates users to acknowledge and account for uncertainty, and sus...
Pollen Cryopreservation Protocols
This volume focuses upon pollen cryopreservation in various crops from the most widely cultivated tomato to the lesser known medicinal species like Decalepis arayalpatra. Chapters detail standard techniques such as pollen collection, cryopreservation, pollen , germination tests for viability, and specific crops. Step-by-step protocols are complemented by personal notes, precautions, and specifying the reagents to be used in each step to ensure the repeatability of the procedure across labs. Authoritative and cutting-edge, Pollen Cryopreservation Protocols aims to serve as reference for researchers studying plant breeding and plant conservation biology.
