1 “... 10-12 years to develop and release of the new variety. During the past 10 years, significant advances...”

2 “... 10-12 years to develop and release of the new variety. During the past 10 years, significant advances...”

3 “... 10-12 years to develop and release of the new variety. During the past 10 years, significant advances...”

4 “... to develop and release of the new variety. During the past 10 years, significant advances have been made...”

5 “...During the past 15 years, cellular and molecular approaches have emerged as valuable adjuncts...”

6 “...During the past 15 years, cellular and molecular approaches have emerged as valuable adjuncts...”

7 “...During the past 15 years, cellular and molecular approaches have emerged as valuable adjuncts...”

8 “..., and pests), negatively affect maize growth, development, production and productivity. In the recent past...”