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Impacts of kinetin implementation on leaves, floral and root-related traits during seed production in hybrid rice under water deficiency.
Ghazy, Mohamed I; Hamad, Hassan Sh; Gewaily, Elsayed E; Bleih, Eman M; Arafat, Elsayed F A; El-Kallawy, Wael H; El-Naem, Sabry A; Rehan, Medhat; Alwutayd, Khairiah Mubarak; Abd El Moneim, Diaa.
Afiliação
  • Ghazy MI; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • Hamad HS; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • Gewaily EE; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • Bleih EM; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • Arafat EFA; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • El-Kallawy WH; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • El-Naem SA; Rice Research and Training Department, Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt.
  • Rehan M; Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, 51452, Buraydah, Saudi Arabia.
  • Alwutayd KM; Department of Genetics, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, 33516, Egypt.
  • Abd El Moneim D; Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia.
BMC Plant Biol ; 23(1): 398, 2023 Aug 22.
Article em En | MEDLINE | ID: mdl-37605164
BACKGROUND: Water deficit is one of the most significant abiotic factors affecting rice and agricultural production worldwide. In hybrid rice, cytoplasmic male sterility (CMS) is an important technique for creating high-yielding crop based on heterosis. The phytohormone kinetin (Kin) regulates cell division in plant during the early stages of grain formation, as well as flow assimilation and osmotic regulation under water stress. The present study performed to estimate the effects of irrigation intervals (irrigation each six days (I6), nine days (I9), twelve days (I12) and fifteen days (I15) against continuous flooding (CF, each three days)) and kinetin exogenously application (control, 15 mg L-1 and 30 mg L-1) on hybrid rice (L1, IR69625A; L2, G46A and R, Giza 178 R) seed production. RESULTS: Leaves traits (Chlorophyll content (CHC), relative water content (RWC), stomatal conductance (SC), Leaf temperature (LT) and transpiration rate (TR)), floral traits such as style length (SL) and total stigma length (TSL), in addition to root traits (i.e., root length (RL), root volume (RV), root: shoot ratio (RSR), root thickness (RT), root xylem vessels number (RXVN) and root xylem vessel area (RXVA) were evaluated and a significant enhancement in most traits was observed. Applying 30 mg L-1 kinetin significantly and positively enhanced all growth, floral and roots traits (RV and RXVA recorded the most increased values by 14.8% and 23.9%, respectively) under prolonging irrigation intervals, in comparison to non-treated plants. CONCLUSIONS: Subsequently, spraying kinetin exogenously on foliar could be an alternative method to reduce the harmful influences of water deficiency during seed production in hybrid rice.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Oryza Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Egito

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Oryza Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Egito