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Plant Breeding and Whole-System Crop Physiology: Improving Adaptation, Maturity and Yield

By: DH Wallace and W Yan

CABI Publishing

Hardback | Jun 1998 | #82527 | ISBN: 085199265X
Availability: Usually dispatched within 6 days Details
NHBS Price: £110.00 $135/€124 approx

About this book

Improvements in adaptation and maturity leading to greater yield are the most important criteria for the acceptance of a new crop cultivar, since yield improvement is one goal of virtually every crop breeding programme. Many such programmes have tended to concentrate on identifying the genetic traits responsible for higher yield and selecting each of them in the later stages of the breeding cycle. However, selection for yield per se is still the most effective method, since it is a combination of traits, operating within the limits of the system, which finally determines yield. This work presents a whole-system or holistic model for the improvement of adaptation, maturity and yield. Central to its thesis is recognition that competition between several components of the plant system, within a constant capacity, i.e. within the limitations of the system, determines yield and other cultivar characteristics. It goes on to describe how this can improve our understanding of plant systems. This understanding can then enhance the success of breeding trials by enabling a compromise to be reached between the different yield components which maximises performance under prevailing field conditions. Based principally on 25 years of research by the authors, the ideas presented in this book should be useful reading for crop physiologists and plant breeders.

"Presenting a whole-system viewpoint for the improvement of adaptation, maturity, and yield in crops, this volume's thesis is that yield and other quantitative traits are determined by system-established changes among levels of all the components of the plant system, which itself functions at a near constant capacity dictated by the limits of the environment. Based on research conducted by the Wallace (plant breeding and biometry, emeritus, Cornell U.) and Yan (crop science, U. of Guelph, Canada), the text provides guidance to help plant breeders to maximize yield under prevailing field conditions by reaching a compromise between the levels of the system components. Suitable for professionals and advanced students in crop physiology and plant breeding."--SciTech Book News
Many scientists in today's agricultural research sector are aware of a trend toward funding reductive research projects at the expense of whole-systems research. This book carries the laudable premise that whol


Shifts from current paradigms suggested by near-whole and whole-system research; the beginning of systems thinking about breeding for yield; biomass accumulation - the first major physiological genetic component of yield; partitioning of photosynthate - the second major physiological genetic component of yield; days to maturity - the third major physiological genetic component of yield; a model of photoperiod x temperature interaction effects on plant development; prediction of phenology by the genotype x photoperiod x temperature interaction model; interactive control over plant development by vernalization, photoperiodism and temperature; yield system analysis - an adjunct to yield trials; interplant competition and breeding for higher crop yield; system-established interconnections among plant traits and implications for plant breeding strategies; maximizing efficiency of breeding for higher crop yield; systems thinking requires multidisciplinary expertise and collaboration.

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