New publication resulting from work that began in Nepal

Some recent work, done almost exclusively through Facebook exchanges on my end, has been published in the the most recent issue of International Journal of Research. This work started in while in Nepal, and largetly consisted of helping my co-authors with analyses and interpretations.While this work is not in my usual focus area, I feel like it’s a good example of how collaborations can stem from the most unlike of circumstances.

S. Nepal, B.R. Ojha, A.J. Sánchez Meador, S.P. Gaire, and C. Shilpakar. 2014. Effect of gamma rays on germination and photosynthetic pigments of maize (Zea mays L.) inbreds. International Journal of Research. 1(5): 511-545. Download

Here’s the abstract:

This investigation was carried out to determine the effects of gamma radiation on germination and photosynthetic pigments of two maize inbred lines (RML-17 and RML-32). The pure dry seeds were irradiated with variable dosages (200, 250, 300 and 350 Gy) at the rate of 65cGy/min from 60Co source. The results showed that there was a significant decreasing effect of the gamma rays on the final germination percentage (FGP) but the rate of germination was not significantly affected by radiation dosages. However, a decreasing trend was observed in general for the germination rate. The higher dose (350Gy) of gamma rays was found to have the maximum inhibitory effect on FGP for both inbreeds (31.2% for line RML-17 and 33.3% for RMl-32)The inhibitory effect of gamma rays was seen for the photosynthetic pigments especially, the chlorophyll-a [minimum at 350 Gy( 6.25mg/gm Fw) for Rml-32]The non-irradiated samples in both inbreed exhibited higher chlorophyll-a content(11.056gmg/gmFW for RMl-17 and 11.74mg/gmFw for RML-32). The effect of gamma rays on chlorophyll-b content was no significant but a decreasing effect was seen in higher radiation dosages. The total chlorophyll content was found significantly affected by dosage for line RMl-32,it was found maximum (21.25gm/mgFw) for non-irradiated sample with the minimum total chlorophyll content occurring at 350Gy(13.47mg/gmFW) furthermore, the concentration of chlorophyll-a was higher than chlorophyll-b in both irradiated and non-irradiated plants except at 350Gy for line RML-32 where chlorophyll-b7(7.21mg/gmFW) was found maximum compared to chlorophyll-a (6.25mg/gmFW). The overall effect of the gamma rays was inhibitory for all the traits under the study.

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