The Volume 2 of the treatise on the Developments in Physiology, Biochemistry and Molecular Biology of Plants provides additional information in the crucial areas for making precise and applied research in the national context, on the one hand, and to unravel the science, on the other hand. In the earlier volume, the theme of publishing this needful treatise has been already made obvious. However, in view of the experiences and enormous advances in plant science research in the last few decades providing enough insight to scan vital research in this century has, almost certainly, enlightened the path to undertake necessary research projects for the benefit of mankind to which we are indispensably committed. We, the plant physiologists, biochemists, molecular biologists and plant nutritionists must be proud of our support to the world's farmers which has helped them make their achievement possible. In this century, up to 2025, the human population is expected to double and that is in truth a serious issue for us to trace out the limiting factors reducing yield potentiality of crop plants, on the one hand, and to understand the science of related processes at different levels, alternatively.