National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment was conducted during Rabi 2015 in a Randomized block design (RBD) with three replications to screen 12 hybrid maize germplasm lines viz., Z630-1, Z630-2, Z630-3, Z630-4, Z637-1, Z637-2, Z695-1, Z695-2, Z695-3, Z638-1, Z638-2, Z638-3 along with three hybrid checks NK6240, P1O3396 and 900MGold. This study was carried out to screen the hybrid germplasm lines exposed to water deficit stress during the reproductive growth stage. The analysis of variance revealed significant differences among the test germplasm line for all the parameters recorded. The direct measurement of RWC and LWP which are considered as consensus estimates of plant water status revealed that Z695-3 (92.32%, -1.84 Mpa) and Z638-2 (89.33%, -1.79 Mpa) are drought tolerant lines along with high yield potential. The biochemical traits include Proline accumulation, epi-cuticular wax content, calcium content and the chlorophyll content, the calcium content is negatively associated with the yield, the leaf wax content and the Proline at 15 DASi observed to be recorded in high yielding germplasm line. The proline content, RWC, LWP and CSI are the most reliable parameters for the phenotypic drought tolerant screening.
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