PJB-2022-206
PREDICTING SEED VIGOR OF LATHYRUS SATIVUS L. SEED LOTS BY COUNTING SINGLE RADICLE EMERGENCE
Negar Ebrahim Pour Mokhtari
Abstract
The early radicle emergence of early single counts was validated as a test for the vigor of the four crop species (canola, radish, maize and wheat). The purpose of this test was to investigate whether radicle emergence (RE) and mean germination time (MGT) could accurately predict emergence of seedlings in the seed lots of Lathyrus sativus L. These experiments were conducted under laboratory and field conditions. Lathyrus sativus L. seeds with nine different genotypes that had been utilized for some years were used to calculate their MGT, field emergence (FE) and RE. The RE was calculated at uniform intervals, from 24 hours to 120 hours after imbibition. Variation in seedling number was calculated by the MGT. There is correlation between MGT and FE was determined as r = -0.667 (P<0.05), the result was determined between FE and RE 96 as r=0.944 (P<0.01). Since, the degree of significance of the FE-RE 96h relationship is higher than the degree of significance of the MGT-FE relationship, the RE value obtained at the end of 96 hours with Lathyrus sativus L. can be used in FE estimates by revealing the power differences between genotypes in a shorter period of time The results concluded that variation in germination time was an early indicator of seed vigor. The strong relationship between RE and FE at ninety-six hours proved that RE could be used as an alternative test to investigate seed vigor in the Lathyrus sativus L.
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