As far as Biodiversity is concerned knowing and estimating the amount of variability is not only important for more productivity (as in the case of crop plants) and accessibility for human use, but also to better understand to preserve and conserve this variability and to carry to our future generations. In the era of declining land races and dramatic use of hybrids, conserving diversity may help mankind to protect his future needs for better food and feed. Это и многое другое вы найдете в книге Rice (Oryza Sativa L.) – A brief study by Morphology and Biometry (Suresh Kumar)