[EBOOK] Standard Evaluation System (SES) for Rice (5th edition), International Rice Research Institute (IRRI)

The Standard Evaluation System (SES) for Rice is one of the most requested IRRI publications that is highly utilized by rice scientists worldwide. It provides a common nomenclature and standardized scales for assessing rice agronomic performance and classifying rice responses to biotic and abiotic stresses. First published in 1975, the SES has been revised four times. The last printed edition came out in 1996 and an online version was published in 2002 in The Rice Knowledge Bank (http://www.knowledgebank.irri.org/extension/index.php/ses).

Revision of the current edition took almost two years to complete. Initially, inputs of rice scientists from international and national rice research programs and the private sector were solicited. This resulted in improvements on the scoring procedures based on the state-of-the-art in the different disciplines. The ensuing drafts were then widely circulated for feedback before generating a final draft.

This 5th edition incorporates improved scoring systems for agronomic traits and morphological characteristics. It also redefined some terminologies like ‘injury’ instead of ‘disease’ for more clarity. With the increasing importance of plant variety protection,the 17 asterisked characters of the Test Guidelines for Rice of The International Union for the Protection of New Varieties of Plants (UPOV), which are important in testing for distinctness of new varieties, were also incorporated. Realizing that improvements may still be made in the future, users of this booklet are requested to send their comments and suggestions to me as INGER Coordinator at IRRI Headquarters for consideration and incorporation in the next edition.

To ensure worldwide dissemination, we are publishing this 5th edition in both print and electronic formats. The latter will be posted in the INGER website (http://inger. irri.org/).

The strong cooperation and significant contributions of scientists from national rice programs, international research centers, and the private sector, among other partners under the Global Rice Science Partnership (GRiSP; http://www.grisp.net/), are gratefully acknowledged.

[EBOOK] Standard Evaluation System (SES) for Rice (5th edition), International Rice Research Institute (IRRI)

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