in order to study grain yield, yield components and growth indices in wheat, the experiment was carried out with five wheat cultivars at rbcd arrangement with 4 replications at gorgan university of agricultural sciences and natural resources. the cultivars included zagros, tajan, kohdasht, durum and n81-18 line. to measure studied traits (leaf, stem and shoot dried weight and leaf area) fifteen...

Agro-meteorological aspects of wheat (Triticum aestivum.L.) at New Delhi have been studied in this paper. A data set six years during the crop growing season between 1985 to 1993 has utilized. The growth period divided into important stages i.e., crown root initiation, tillering, elongation, flowering, grain development and maturity. Water requirement various its growth, water use efficiency, c...

Based on theoretical analysis and numerical calculations, this study systematically investigated the changes in rice tillering dynamics simulation of stem tiller growth during stage using farm water level as a regulation index for irrigation drainage. pit testing, results show that both flooding drought suppress output have certain compensating effect following rehydration. Heavy period reduced...

A field experiment was conducted on “Effect of foliar spray Nano urea yield and economics rice (Oryza sativa L.) at Bihar Agricultural College Farm, Sabour during kharif season 2022 in randomized block design (RBD) with six treatments four replications. The results showed that highest number tillers meter-2, panicles filled grains panicle- 1, 1000-grain weight (g), grain (4899 kg ha-1) straw 60...

Nitrogen (N) in plants is generally diagnosed by a soil test and plant tissue analysis.However, such analyses are costly in terms of time and money and are not easily accessible byresearchers and extension workers, let alone farmers. Alternative cost-effective methods arerequired for rapid analysis of the N status of crops and to guide N management in wheat. Theobjective of this study was to as...

Rice (Oryza sativa) is one of the most important crops in the world. Several rice insertional mutant libraries are publicly available for systematic analysis of gene functions. However, the tagging efficiency of these mutant resources-the relationship between genotype and phenotype-is very low. We used whole-genome sequencing to analyze a T-DNA-tagged transformant from the Taiwan Rice Insertion...

Drought is one of the major limiting factors in wheat production in Pakistan. Five commercial wheat varieties; Chakwal-97, Inqilab-91, Margalla-99, NR-234 and Wafaq2001 were grown in pots in glasshouse. Plants were subjected to three consecutive drought cycles at tillering, pre-anthesis and milky growth stages by withholding water till leaf rolling started. Measurements of physiological respons...

The phenylpropanoid pathway serves as a rich source of metabolites in plants. It is required for the biosynthesis of lignin and acts as a starting point for the production of many other important compounds involved in growth and development. Phenylalanine ammonia-lyase (PAL) catalyzes the first step of the phenylpropanoid pathway. PAL gene expression changes during the growth and development of...

Tillering in rice (Oryza sativa) is one of the most important agronomic traits that determine grain yields. Previous studies on rice tillering mutants have shown that the outgrowth of tiller buds in rice is regulated by a carotenoid-derived MAX/RMS/D (more axillary branching) pathway, which may be conserved in higher plants. Strigolactones, a group of terpenoid lactones, have been recently iden...

Rice (Oryza sativa cv. Jindao 1187) was grown in open-top chambers which contained ambient and enriched C02. C02 elevation stimulated rice tillering during early vegetative stage. However, panicle dry weight per plant did not change at maturity stage. Root biomass was enhanced by high COz. Root / shoot ratio was increased under high C02 at maturity, indicating more carbon allocation to the belo...