In the life cycle of plants, the phase transition from vegetative growth to reproductive growth is very important. Many species have evolved multiple ways to adapt to the environment and endogenous factors to regulate flowering. It is now known that plant flowering is mainly regulated by five main signal pathways, namely, photoperiod, vernalization, age, autonomy, and gibberellin. In addition, it is also affected by some environmental factors such as drought stress, salt stress, cold stress, nutrient deficiency, heat damage, sugar budget, oxygen stress, and biotic stress. Furthermore, the quality and quantity of flowers determine the yield of crops and the quality of fruits. Flower development has been summarized as the ABC model and then extended to the ABCDE model. A large number of related genes have been cloned and functionally identified in annual plants and perennial plants. Over recent years, enormous scientific progress has been made to understand the molecular basis of flowering and flower development. However, flowering and flower development still need to be further explored for future crop breeding.

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We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first visit or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

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