Meet the editors

Dr. Anjana Rustagi holds a Ph.D. in Botany from the University of Delhi, India. She has more than twelve years of experience in teaching and research. She is currently faculty in the Department of Botany, Gargi College, University of Delhi. Her research interests include regeneration and genetic transformation of crop plants for enhanced tolerance to biotic and abiotic stresses. Dr. Rustagi has also worked towards elucidating the role of ABA

in embryogenesis. She has many peer-reviewed publications and book chapters to her credit. She is an advisor for Ph.D. projects and a permanent member of the International Society of Plant Morphologists.

Dr. Bharti Chaudhry is an associate professor in the Department of Botany, Ramjas College, University of Delhi, India. She was awarded a Ph.D. from the University of Delhi in 1993 and has been teaching Reproductive Biology of Angiosperms, Economic Botany, Plant Anatomy, and Plant Tissue Culture to undergraduate students in Botany and Life Sciences for more than twenty-eight years. She is the author of the books *Biology of Pollen* and

*A Handbook of Common Medicinal Plants Used in Ayurveda*. She has many peer-reviewed publications and book chapters to her credit. Her current research interests are food and nutrition, herbal drugs, and Indian traditional systems of medicine.

Contents

of Flower Symmetry

in Angiosperm Plants

Agro-Ecosystem

Recent Advances *by Hana'a Burezq*

*by Renu Puri and Anjana Rustagi*

*by Elizabeth L. Kordyum and Helen A. Kravets*

*Sanjay Kumar Attar and Shish Ram Dhaka*

*by Subhankar Gurung and Arun Chettri*

Invasive Exotic Plant-Pollinator Interactions *by B.C. Anu and Ramanuj Vishwakarma*

Germination and Seedling Establishment *by Sananda Mondal and Bandana Bose*

**Preface III**

**Chapter 1 1**

**Chapter 2 15**

**Chapter 3 41**

**Chapter 4 57**

**Chapter 5 71**

**Chapter 6 83**

**Chapter 7 107**

Current Trends in Developmental Genetics and Phylogenetic Patterns

Evolutionary Patterns of the Internal Structures of Generative Organs

Pollinators: Their Relevance in Conservation and Sustainable

*by Mukesh Nitharwal, Rashmi Rolania, Hanuman Singh Jatav, Kailash Chandra, Mudassar Ahmed Khan, Subhita Kumawat,* 

Threat to *Citrus* in a Global Pollinator Decline Scenario: Current Understanding of Its Pollination Requirements and Future Directions

Reproductive Ecology of Forage Alfalfa (*Medicago sativa* L.):

Seed Priming: An Interlinking Technology between Seeds, Seed
