Hassan and Bano, (2015) applied tryptophan combined with Pseudomonas moraviensis and Bacillus cereus to wheat and reported that this application increase number of plants per square meter, spike length, number of spikelet
per spike, and grain weight.
During the reproductive period in rice, salinity causes morphological variations similar to other environmental stresses, which cause inhibition of the growth of plant structures, such as the degeneration of primary, secondary and panicle spikelets
(CUI et al., 1995).
For instance, some reported that foliar application with combination of micronutrients (Cu+Fe+Mn+Zn) produced the highest values of plant height (85.03 and 87.17 cm), tillers number m-2, spikes number m-2, spike length, number of spikelet
spike-1, number of grains spike-1, 1000-grain weight, grain yield, straw yield, biological yield and harvest index, respectively, in both seasons followed by Zn foliar application followed by Mn foliar application followed by Fe foliar application then Cu foliar application.
(2007) whom found the substantial increase in spikelet
's per spike by increasing the seed rates of wheat crop.
But under two water condition, the selection efficiencies were lower (relative efficiency 0.44 to -0.02) based on Pn at early filling stage, the flowering period, plant height, spikelet
number, sterile spikelets
, 1000 grain weight, harvest index and grain yield per plot (Table 5).
NP, number of panicles per plant; NGP, number of grains per panicle; NSP, number of spikelets
per panicle; SF, spikelet
fertility; TGW, 1000-grain weight; GY, grain yield per plant; RIL, recombinant inbred line; TC, testcross [F.sub.1]; [H.sub.MP], mid-parent heterosis.
After several branches are produced, the IM switches and generates axillary meristems that produce one spikelet
meristem, SM), which is a determinate meristem.
The test cross nursery was raised and observations were recorded on agronomical traits of interest and also on pollen and spikelet
Rice straw mulching in aerobic rice improved spikelet
production although it only increased the number of empty spikelets
(Table 2) while neither varying fertilizer dosages nor SPAD-based fertilizer application had any significant effect on the yield components of aerobic rice (Table 3 and Table 4, respectively).
The modes of damage to wheat crop were, loopering of tops of wheat plant, poor pollination/fertilization, shattering of spikelet
in early sown wheat crop, mechanical injury to Flag leaf and stem of wheat.