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Acta Agron Sin ›› 2012, Vol. 38 ›› Issue (03): 522-527.doi: 10.3724/SP.J.1006.2012.00522

• TILLAGE & CULTIVATION · PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Optimum Harvest Time of Vicia cracca under Stress Condition

WANG Ying1,2,HOU Yu3,LI Xiao-Yu2,SUN Hai-Xia2,LIN Ji-Xiang1,MU Chun-Sheng1,?   

  1. 1 Key Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Changchun 130024, China; 2 Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China; 3 College of Chemistry and Biology, Beihua University, Jilin 132013, China
  • Received:2011-05-10 Revised:2011-12-15 Online:2012-03-12 Published:2012-01-04
  • Contact: MU Chun-Sheng, E-mail: mucs821@nenu.edu.cn, Tel: 0431-85098113
  • Supported by:

    This work was financed by Projects in the National Science & Technology Pillar Program (2009BADB3B02).

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Abstract: Timely harvest is critical to achieve maximum seed viability, vigour and yield. Many native grasses display seed shattering and other seed production problems. Shattering during harvest is a major problem in seed production of Vicia. cracca (L.). The objective of this study was to further determine the optimum harvest time of V. cracca by simultaneously analyzing pod and seed morphological and physiological characters, as well as seed stress tolerance. Pods were harvested at three-day intervals from peak anthesis until pod shattering in pod development. The results showed that pod dry weight (DWT) and thousand seed weight (TSW) reached the maximum, as well as pod moisture content (PMC) reached the minimum from 36 to 42 days after peak anthesis (DAPA). The maximum percentage germination, germination rate and radicle length were at about 36 DAPA under NaCl and Na2CO3 stresses.Therefore, V. cracca can be harvested at six days before pod shattering without affecting yields and seed quality.

Key words: Salinity, Alkalinity, Harvest time, Pod, Seed

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