Development of an Easy Examination Method for the Seed Productivity of Timothy (Phleum pratense L.)

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  • チモシー(Phleum pratense L)種子収量性の簡易検定法の開発
  • チモシ Phleum pratense L シュシ シュウリョウセイ ノ カンイ ケンテイホウ ノ カイハツ

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Abstract

Seed productivity of forage crops has been paid less attention to than their vegitative productivity, though it is important for the commercial success of their varieties. An easy examination method was tried to develop for improving seed productivity of timothy effectively. As this trait depends on panicle seed weight (PSW) or seed weight per panicle length (SWPPL), we thought that these two characters should be actually examined in this easy method, and that the material should be internode-elongated stems (IES's) pulled out from clone-stumps. From this viewpoint, the IES's pulled out on May 22, 2002 from 11 early-maturing timothy clones were kept in the hydroponic conditions in our greenhouse till the seed harvest. The PSW and SWPPL of these materials showed high correlations with the the field test results of 2000, from which it was concluded that IES's are useful for the easy method to estimate seed productivity of timothy.

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